The entire egg retrieval process, from the first hormone injection to walking out of the clinic after the procedure, takes about two weeks. The surgical retrieval itself is a 30- to 60-minute procedure, but most of the time is spent in the stimulation phase leading up to it. Here’s what each stage looks like and how long it takes.
The Stimulation Phase: 10 to 14 Days
The bulk of the egg retrieval timeline is the ovarian stimulation cycle, which typically runs 10 to 14 days. During this phase, you’ll give yourself daily hormone injections designed to encourage your ovaries to develop multiple mature eggs at once, rather than the single egg your body would normally release in a cycle. The exact length depends on how your body responds to the medications. Some people’s follicles grow quickly and are ready in 10 days; others need the full two weeks or occasionally longer.
Throughout stimulation, you’ll visit your fertility clinic regularly for monitoring appointments that include blood draws and transvaginal ultrasounds. These let your care team track how many follicles are growing and how large they’re getting. The visits ramp up as retrieval day approaches. Patients on injectable medications may need up to seven monitoring appointments over a two-week period, with most of those clustered in the final days of stimulation. Each visit is relatively quick, usually under an hour, but they do require morning scheduling and can be disruptive to a work routine.
The Trigger Shot: A Precisely Timed Countdown
Once your follicles reach the right size, your clinic will schedule a “trigger shot,” a final injection that causes the eggs to complete their maturation. The timing here is exact. Your body will ovulate and release eggs from the follicles roughly 37 to 38 hours after the trigger shot. The retrieval is scheduled 35 to 36 hours after the injection, just before ovulation occurs, so the eggs can be collected while they’re still inside the follicles.
In practice, this means if you take the trigger shot at 10 p.m. on a Monday, your retrieval will be at 10 a.m. on Wednesday. Your clinic will give you a specific time to administer the shot, and sticking to that window is critical. A missed or mistimed trigger can mean the eggs are released before the procedure or aren’t mature enough to use.
The Procedure Itself: 30 to 60 Minutes
On retrieval day, the surgical procedure takes about 30 to 60 minutes. You’ll receive IV sedation rather than full general anesthesia, which means you’ll be deeply sedated but won’t need a breathing tube. Most people have no memory of the procedure and feel no pain during it. A physician uses an ultrasound-guided needle inserted through the vaginal wall to aspirate fluid from each follicle, collecting the eggs one by one.
You’ll typically wake up within 5 to 10 minutes of the procedure ending, then spend about 30 minutes returning to full alertness. Total recovery room time runs about an hour, though some patients need a bit longer. You will not be allowed to drive for 24 hours after sedation, so plan for someone to take you home.
What Happens Right After Retrieval
About three to four hours after the procedure, the lab team examines the collected eggs and assesses how many are mature. Your clinic will typically contact you later that day or the following morning with your egg count and maturity results. Not every follicle yields a usable egg, and not every egg will be mature, so the final number is often lower than the follicle count you saw on monitoring ultrasounds.
For the rest of retrieval day, expect to feel crampy, bloated, and tired. Most people take the day off entirely. Many feel well enough to return to normal activities the next day, though some experience lingering bloating and pelvic discomfort for several days. Light spotting is common and not a concern.
Ovarian Hyperstimulation Syndrome
The main complication to watch for after retrieval is ovarian hyperstimulation syndrome, or OHSS. Symptoms usually begin within a week of the injectable medications, though they can sometimes take two weeks or longer to appear. A mild form is relatively common and typically resolves on its own within about a week. Symptoms include bloating, nausea, and mild abdominal pain.
More severe cases involve rapid weight gain, severe abdominal swelling, and difficulty breathing. If a pregnancy occurs during the same cycle, OHSS can worsen because the body begins producing its own pregnancy hormones, which further stimulate the ovaries. This is one reason many clinics now recommend freezing all embryos and transferring them in a later cycle, giving the ovaries time to settle down.
The Full Timeline at a Glance
Adding it all up, most people spend about two weeks from the first injection to the retrieval procedure. Here’s how the time breaks down:
- Daily injections: 10 to 14 days
- Monitoring visits: 5 to 7 appointments during the stimulation phase
- Trigger shot to retrieval: 35 to 36 hours
- The procedure: 30 to 60 minutes
- Recovery room: about 1 hour
- Rest at home: remainder of the day, with most people resuming normal activity within 1 to 2 days
If you’re doing egg retrieval for IVF, the next steps involve fertilization and embryo development, which adds another five to six days before you’ll know how many viable embryos you have. If you’re freezing eggs for future use, your part is done after retrieval day, and the eggs go directly into storage.