Day by Day IVF Process for the Partner: Stim to Transfer

You are the partner. The IVF cycle is starting in two weeks, or it is already running. You are looking at a fridge full of vials with words you cannot pronounce, a calendar that just acquired six clinic visits, and a partner who is alternately bloated, exhausted, and snapping at you. You came here for a day-by-day IVF process map so you know what is coming and what your job actually is. That is exactly what this post is.

I want to say something I do not say to my patients, because patients do not need to hear it the way you do. The partner who learns the timeline, gives the injections cleanly, watches for ovarian hyperstimulation, and stays useful through retrieval and the 5-day wait is doing more work than the cycle gives them credit for. This post treats your role as the clinical job it is.

The day by day IVF process, big picture

Before we get to your day-by-day work, here is the shape of the whole thing. An IVF cycle has seven phases:

1. Down-regulation or antagonist priming: Variable length depending on protocol. Long-agonist protocols (Lupron) start the cycle before with 2 to 3 weeks of suppression. Antagonist protocols often start straight in on cycle day 2 or 3.¹
2. Ovarian stimulation: Daily gonadotropin injections (FSH, sometimes with LH), monitoring scans and blood tests every 2 to 3 days. Typically 8 to 12 days.¹
3. Trigger shot: When the follicles are mature on ultrasound and oestradiol levels are appropriate, a precisely-timed injection is given to finalise egg maturation.
4. Oocyte retrieval (egg collection): Approximately 34 to 36 hours after trigger. 20 to 40 minute outpatient procedure under sedation.
5. Fertilisation and embryo culture: Conventional IVF or ICSI on retrieval day. Embryos grown 5 to 6 days in the lab.
6. Embryo transfer: Either a fresh transfer at day 3 or 5 after retrieval, or a freeze-all followed weeks later by a frozen embryo transfer (FET).
7. Luteal support and beta-hCG: Progesterone (vaginal or intramuscular) continues until the pregnancy test, which is drawn 9 to 12 days after transfer.

Total time from period day 1 to the first beta-hCG: about 6 weeks for a fresh transfer, 10 to 14 weeks for a freeze-all plus FET, longer if banking multiple cycles or running PGT-A. The NICE fertility guideline lays out this same architecture and is what most UK clinics work from.⁷

Your job is different in each phase. Let me walk you through it.

Stim phase, day by day: your job

Day 1 to 2 (baseline scan and bloods) She has a scan and blood test at the clinic, usually on cycle day 1 or 2. You drive, you listen, you keep the schedule sheet. The clinic will hand you a printed protocol or send one via the patient portal. Take a photo of it. Put every appointment in a shared calendar with a 2-hour reminder.

Day 2 to 3 onward (injections begin) Daily subcutaneous injections of FSH (Gonal-F, Follistim, Menopur, Bemfola), sometimes with added LH activity. Usually given in the evening, same time each day. Most clinics teach injection technique in a class or video. If you are the injector (and I recommend you offer to be), run the workflow once dry the night before:

• Wash hands, clean surface, lay out supplies.
• Mix or draw up the medication.
• Choose a fresh site on the lower abdomen, 5 cm away from the navel, alternating sides each evening.
• Pinch the skin, insert at 90 degrees (or 45 for very thin patients), inject slowly, hold for 10 seconds.
• Press, do not rub.
• Log the injection (medication, dose, time, site) somewhere you will not lose.

If you mess up an injection, do not panic and do not silently re-dose. Call the clinic. Once.

Day 4 to 6 (early stim) Symptoms are minimal. She is on medication; life looks normal-ish. Use this window. Meal-prep for the bloating week ahead. Confirm time off work for retrieval. Restock the freezer with soft food. Buy electrolyte drinks. This is also a good time to read the OHSS section below carefully, because that is what you will be watching for next week.

Day 6 to 8 (mid stim) Bloating starts. The antagonist injection (Cetrotide or Ganirelix) is usually added once the leading follicle reaches 12 to 14 mm. The antagonist prevents her body from ovulating before the trigger can be given. Now there are 2 to 3 injections per evening. Routine matters here. Get the order right; do them in the same order every night. Most antagonist injections are stored in the fridge and need to come to room temperature for 20 to 30 minutes before injection.

Day 8 to 12 (late stim) Monitoring frequency increases to every 1 to 2 days. She is tired, heavy, irritable. The bloat is no longer subtle. You take over the driving, the food shopping, the low-stimulus evenings. Cancel social plans she would feel guilty cancelling herself.

Trigger day The trigger shot, usually hCG (Ovidrel, Pregnyl), GnRH agonist (Lupron), or a dual trigger of both, is given at a precise time. The clinic will tell you the exact minute. Set three alarms: one 30 minutes before, one at the trigger time, one immediately after to confirm injected.

Missing trigger time by more than 30 to 60 minutes is the single most consequential error in an IVF cycle. If you have any doubt that the injection was given correctly (vial dropped, medication leaked, needle bent), call the clinic immediately. Not in the morning.

Watching for OHSS: your most important medical job

Ovarian hyperstimulation syndrome (OHSS) is the main complication of stimulation. The Royal College of Obstetricians and Gynaecologists Green-top Guideline No. 5 and the ASRM practice committee guideline are the references most clinics work from.^{2 3}

OHSS ranges from mild (1 to 3 percent of cycles) to severe (under 1 percent in modern antagonist protocols, more common in PCOS and high responders).

Mild OHSS: bloating, mild abdominal discomfort, mild nausea. Manage at home. Tell the clinic at the next contact.

Moderate OHSS: significant abdominal distension, persistent nausea or vomiting, weight gain over 1 kg in 24 hours, reduced urine output. Call the clinic same day.

Severe OHSS: severe abdominal pain, weight gain over 2 kg in 24 hours, very low urine output (oliguria), shortness of breath especially lying flat, leg swelling or calf pain. This is an emergency. ER if the clinic is unreachable.²

Why you are the right person to catch this:

• She is bloated and uncomfortable already and may underplay symptoms.
• She may not weigh herself daily without prompting.
• She may not notice that she has not urinated in 6 hours.
• She may not realise that being out of breath walking to the bathroom is new.

Concrete things you do each day from day 8 through day 7 post-retrieval:

• Weigh her at the same time each morning, same clothes. Write it down.
• Ask: "When did you last urinate?" once mid-afternoon and once evening.
• Ask: "How tight is your waistband compared to yesterday?"
• Notice if she is breathing harder than usual when sitting still.

Modern preventions that may apply to your cycle: GnRH agonist trigger instead of hCG in high-risk patients, freeze-all strategy with a delayed FET, lower stimulation doses. If she has PCOS, very high AMH, or has had OHSS before, ask the clinic specifically what they are doing to lower OHSS risk this cycle.

Retrieval day: what you do

The night before: she stops eating and drinking after midnight, or per your clinic's exact NPO (nothing by mouth) rules. Lay out clothes she can pull on without raising her arms. No perfume, lotion, deodorant with scent, or nail polish for either of you. No jewellery.

Morning of: you drive. She sits in the waiting area for 60 to 90 minutes for IV placement, vitals, and consent. The procedure itself is 20 to 40 minutes. Total on-site time is usually 3 to 4 hours.

Anaesthesia is conscious sedation or light general anaesthesia, propofol-based at most clinics. She will not drive home. She may not remember the immediate post-op hour clearly.

Your sperm sample

This is the part of retrieval day clinics rarely brief partners on in detail. Your sample is collected the morning of retrieval, on-site in a private collection room, after an abstinence period (typically 2 to 5 days, per clinic). Some labs accept a sample brought from home in a specific container within a tight time window. Some labs accept a previous-evening sample with overnight refrigeration. Confirm with the embryology lab the week before.

Build 30 to 60 minutes into your arrival for the collection. You will be given a labelled container, instructions, and privacy. Wash your hands; no lubricants unless the lab approves a specific brand. Take a photo of the labelled container before handing it to the embryology window. If you have a known sperm issue or you have had trouble producing on demand in the past, tell the clinic in advance and they will discuss back-up options (a frozen sample held in reserve is the usual one).

If you have a frozen sample on file already, the lab will thaw it that morning and use it. Confirm the day before that they have located the correct vials.

After retrieval

She rests for an hour or two in the clinic. You sit nearby. The nurse will give you the egg count before discharge; write it down in two places so you do not lose it. Then home.

She will be groggy, sore, sometimes nauseated. Expect spotting, cramping, bloating for 24 to 72 hours. The bloat actually peaks 3 to 5 days after retrieval, not the day of, so the worst is not in front of you on retrieval evening.

Your job that evening: paracetamol (acetaminophen) on the clinic's schedule, avoiding NSAIDs (ibuprofen, naproxen) early because they can interfere with implantation if a fresh transfer is planned. Hydration with electrolyte drinks, not just water. Easy food. No big decisions or driving for 24 hours. She sleeps.

The 5-day fertilisation wait

This is one of the strangest emotional spaces in the cycle, and it is mostly yours to manage because she will be sore and tired.

Day 0 (retrieval day): oocyte count from the embryologist that afternoon.

Day 1 (next morning): fertilisation report. How many mature (MII) eggs. How many fertilised normally (2PN). Conventional IVF or ICSI was decided based on sperm parameters.

Day 3: early cleavage-stage embryo count. Some clinics offer day 3 transfer; most modern programmes wait for day 5 blastocyst.

Day 5 to 6: blastocyst report. Number of viable blastocysts, grading using something like the Gardner system,⁶ and the plan for fresh transfer or freeze-all.

In this 5-day window there is genuinely nothing for either of you to do. The lab is doing the work. You are not helping by refreshing the patient portal at 11 pm.

What you do: do not catastrophise the day-1 fertilisation drop. A cycle with 12 retrieved eggs, 9 mature, 7 fertilised, and 4 making blastocyst on day 5 is a normal cycle, not a failing one. This is the funnel everyone goes through. Read the embryo grading post and the good-numbers post in advance so you can interpret the call without panic.

If the numbers are lower than you both hoped, listen. Do not problem-solve in the first hour. Do not say "next time we will get more." Just sit with the number.

Transfer day

A fresh transfer happens day 3 or day 5 after retrieval. A frozen embryo transfer (FET) happens weeks or months later in a separately prepared cycle. The choice depends on cycle quality, OHSS risk, lining, and whether PGT-A is being done.

The procedure: similar to an intrauterine insemination (IUI) in feel, but with an embryo on a catheter instead of sperm. A thin catheter is passed through the cervix and the embryo is placed in the uterine cavity under ultrasound guidance. About 10 to 15 minutes. Most clinics allow the partner in the room. The ASRM practice guideline on performing the embryo transfer covers the technique in detail.¹

Pre-transfer: usually a full bladder is requested (improves ultrasound visualisation of the catheter tip). Drive carefully on the way; do not let her wait an hour in the lobby with a full bladder.

Post-transfer: short rest at the clinic, then home. Normal activity. Bed rest is not recommended and is actively harmful to outcomes. The Gaikwad randomised trial showed bed rest after transfer reduced IVF outcomes.⁴ Do not insist she lie still. Walking and ordinary daily activity are fine and probably better.

Luteal progesterone support continues: vaginal pessaries (Endometrin, Crinone, Cyclogest) or intramuscular progesterone-in-oil (PIO) injections. PIO is a different skill from the subcutaneous stim shots. The needle is longer (1.5 inches), the medication is thicker (oil-based), the site is the upper outer quadrant of the buttock, and you usually warm the syringe in your hands for a minute before injecting. If she has been prescribed PIO and you are the injector, ask the nurse to walk you through it before you leave the clinic. Practise once dry that night.

Beta-hCG: typically 9 to 12 days post-transfer for a blastocyst transfer.

How to be useful in the 9 to 12 day wait

This is the second hardest emotional space in TTC (the first is post-loss). You cannot do anything to change the outcome.

What helps:

• Do not introduce false hope or false despair.
• Do not read implantation symptoms aloud from the internet. Trigger hCG persists 10 to 14 days; early home tests are often wrong both ways. Symptoms in this window are mostly progesterone, not pregnancy.
• Do not pressure her to test early. Wait for the beta-hCG.
• Book one low-stakes plan for the evening of beta day, regardless of the result. Dinner. A movie. Nothing that requires planning if the news is hard.
• Plan for both outcomes practically. Not as catastrophising. As preparation.

The Boivin meta-analysis is worth knowing in this window: pre-treatment distress in IVF patients does not predict pregnancy outcome.⁵ You are not making the cycle work by being calm, and she is not breaking it by being scared. The cycle's outcome is the cycle's outcome.

What is normal, what is a red flag

Normal: stim bloating, mild abdominal cramping, mild post-retrieval spotting for 1 to 3 days, fatigue, irritability, breast tenderness.

Red flag (call the clinic same day): moderate or severe OHSS symptoms (see above); fever over 38°C (100.4°F); heavy bleeding more than a pad per hour; severe one-sided pain post-retrieval (rule out bleeding or torsion); persistent vomiting.

Emergency (ER): severe shortness of breath, chest pain, fainting, calf pain or swelling (small but real VTE risk in stim cycles), severe pain unrelieved by anything.

Red flag emotionally: panic attacks, withdrawal, persistent low mood, not engaging with the cycle. Get her, and you, connected to support before transfer day if so. Many fertility clinics have a counsellor in-network.

What you can do this week

Concrete and not abstract. A day by day IVF process works best when the partner's logistics are set early:

• Open a shared calendar. Put every clinic appointment, every injection time, every monitoring scan, retrieval, transfer, and beta day in it. Set 2-hour-before alarms for every injection.
• Stock the fridge: electrolyte drinks, plain crackers, soft food, broth, Greek yogurt, eggs. Lay out soft, loose clothes.
• Book time off work. At minimum: retrieval day. Ideally: retrieval day plus the day after, transfer day, and beta day for both of you.
• Practise the injection workflow dry, even if you have done it for IUI cycles. Antagonist injections and progesterone-in-oil injections are different skills.
• Read the IVF emotional survival post (/ivf/emotional-survival-during-ivf) this week, for both of you. The hardest week is rarely the one you expect.

What's next

• For her, the two-week wait after transfer: /two-week-wait/luteal-phase-explained
• If the cycle is feeling heavy and you want a coping framework: /ivf/emotional-survival-during-ivf
• If you want the procedural detail on retrieval day itself: /ivf/egg-retrieval-day
• If the cycle fails or ends in loss: /when-things-dont-go-to-plan/failed-ivf-decoding-next and /when-things-dont-go-to-plan/partner-during-loss

Sources

1. ESHRE Guideline Group on Ovarian Stimulation. ESHRE guideline: ovarian stimulation for IVF/ICSI. Human Reproduction Open 2020;2020(2):hoaa009. https://doi.org/10.1093/hropen/hoaa009
2. Royal College of Obstetricians and Gynaecologists. The Management of Ovarian Hyperstimulation Syndrome. Green-top Guideline No. 5, 2016. https://www.rcog.org.uk/guidance/browse-all-guidance/green-top-guidelines/the-management-of-ovarian-hyperstimulation-syndrome-green-top-guideline-no-5/
3. Practice Committee of the American Society for Reproductive Medicine. Prevention and treatment of moderate and severe ovarian hyperstimulation syndrome: a guideline. Fertility and Sterility 2016;106(7):1634-1647. https://doi.org/10.1016/j.fertnstert.2016.08.048
4. Gaikwad S, Garrido N, Cobo A, Pellicer A, Remohi J. Bed rest after embryo transfer negatively affects in vitro fertilization: a randomized controlled clinical trial. Fertility and Sterility 2013;100(3):729-735. https://doi.org/10.1016/j.fertnstert.2013.05.011
5. Boivin J, Griffiths E, Venetis CA. Emotional distress in infertile women and failure of assisted reproductive technologies: meta-analysis of prospective psychosocial studies. BMJ 2011;342:d223. https://doi.org/10.1136/bmj.d223
6. Gardner DK, Schoolcraft WB. In vitro culture of human blastocysts. In: Jansen R, Mortimer D, eds. Towards Reproductive Certainty: Fertility and Genetics Beyond 1999. Parthenon Publishing, 1999:378-388.
7. National Institute for Health and Care Excellence. Fertility problems: assessment and treatment. NICE Guideline CG156, 2013 (updated 2017). https://www.nice.org.uk/guidance/cg156