Most people who go through IVF spend a stretch of days taking daily hormone injections so several follicles can grow at once. Clinics call this the stimulation phase, or stims. It usually lasts somewhere between eight and fourteen days, though the exact length depends on how your ovaries respond and what your clinic decides at each check.
This is not a medical guide. Your clinic sets the protocol, the doses, and the timing. What follows is a plain picture of how the phase often unfolds for many patients, so the calendar feels less abstract.
How the phase usually starts
Stimulation commonly begins on day two or three of a menstrual cycle, after a baseline ultrasound and blood work confirm the ovaries are quiet. You start the prescribed injections — often a combination of follicle-stimulating hormones — at roughly the same time each day. Many people choose the evening so the routine fits around work or sleep.
In the first few days you may feel little beyond mild injection-site tenderness. Some notice a subtle sense of heaviness in the lower pelvis as blood flow to the ovaries increases. Others feel almost nothing. Both are common.
Monitoring visits
Clinics bring you in every two or three days for monitoring. These visits usually include a transvaginal ultrasound to measure follicle sizes and a blood draw to track estradiol and other hormones. The results help the team decide whether to keep the current dose, adjust it, or add an antagonist medication that prevents the follicles from releasing too early.
The antagonist is often introduced around day five to seven once follicles reach a certain size, but the exact day is clinic-specific. Monitoring becomes more frequent as the lead follicles approach the size the clinic wants before the trigger shot.
Mid to late stimulation
As the days pass, more people report bloating, a feeling of fullness, mild cramping, breast tenderness, fatigue, or mood shifts. These sensations tend to track rising hormone levels and growing ovaries. They vary widely — some feel them strongly by day six or seven; others stay relatively comfortable until closer to retrieval.
Work and light daily activity are usually possible for most of the phase. Many people find looser clothes and extra rest in the afternoons helpful once the bloating builds. Clinics often emphasise hydration and listening to the body; they will give you their own list of warning signs that should prompt a call.
The end of stims
When enough follicles have reached the target range, the clinic schedules a trigger injection. This shot is timed carefully — often thirty-five to thirty-seven hours before egg retrieval — so the eggs finish maturing. After the trigger, the daily stimulation injections stop. Retrieval follows on the scheduled day.
Keeping the schedule organised
The practical load of stims is real: multiple medications, exact timing, site rotation, and appointment reminders. Paper lists and phone alarms work for some people. Others prefer a single place that holds the protocol, the daily doses, the injection sites used, and the upcoming monitoring visits.
Cove is built for that job. You can set medication schedules and reminders, log injection sites so you rotate them, and keep appointments and test results in one timeline. The protocol photo scan lets you capture the clinic sheet and then verify the extracted details yourself before anything is saved. Nothing is written without your confirmation.
If you want a calmer way to hold the daily details, you can download Cove from the App Store: https://apps.apple.com/app/id6788749556.
Related reading on Cove
Your clinic remains the source of truth for every medical decision. An organised record simply makes the logistics easier to carry.
Download Cove on the App Store when you are ready: https://apps.apple.com/app/id6788749556.