IVF is a weeks-long process that involves hormone injections, a minor surgical procedure to collect eggs, laboratory fertilization, and then transferring an embryo back into the uterus. A single cycle typically takes four to six weeks from the start of medication to pregnancy test, though preparation and frozen transfers can extend that timeline. Here’s what the experience actually looks and feels like at each stage.
The Injection Phase: 8 to 14 Days
IVF starts with self-administered hormone injections designed to stimulate your ovaries into producing multiple eggs instead of the single egg released in a normal cycle. These injections go just under the skin, usually in the belly or upper thigh, using a short, thin needle similar to what people use for insulin. You’ll give yourself one or two shots per day, and timing matters: your clinic will ask you to stay within a 30-minute window each day, often early morning or late evening.
The stimulation medications contain hormones that drive egg and follicle growth. Alongside those, you’ll take a second medication to prevent your body from ovulating too early and releasing the eggs before retrieval. This means some days involve two separate injections. The stimulation phase lasts about 8 to 14 days, during which you’ll visit the clinic every two to three days for blood draws and transvaginal ultrasounds so your doctor can monitor how many follicles are developing and adjust your dosage.
Physically, most people start feeling the effects within the first week. Your ovaries swell as follicles grow, which can cause bloating, pelvic pressure, and a heavy or full sensation in your lower abdomen. Some people describe feeling like their ovaries are the size of tennis balls by the end of stimulation. Mood swings, headaches, and fatigue from the hormones are common. By the final days, you may feel uncomfortable enough that tight pants and vigorous exercise are off the table.
Egg Retrieval: The Procedure Itself
When your follicles are mature, you’ll take a precisely timed “trigger shot” that prepares the eggs for collection. About 36 hours later, you go in for the retrieval. This is a short procedure, roughly 15 to 20 minutes, performed under intravenous sedation. You’ll be fully asleep and won’t feel anything. The doctor uses an ultrasound-guided needle inserted through the vaginal wall to drain each follicle and collect the eggs.
Recovery takes about an hour in the clinic. Expect mild to moderate cramping for a few hours afterward, similar to period cramps, and some grogginess or nausea as the sedation wears off. You’ll need someone to drive you home. Most clinics recommend rest and plenty of fluids for the remainder of the day, and avoiding strenuous activity until you feel fully recovered. Some people bounce back the next day; others feel sore and bloated for several days, especially if a large number of eggs were retrieved.
What Happens in the Lab
While you’re recovering at home, your eggs are combined with sperm in the laboratory. The embryology team monitors development daily. By day three, a healthy embryo has divided into roughly six to eight cells. By day five or six, the strongest embryos reach the blastocyst stage, a more advanced structure of about 100 or more cells with two distinct cell types. Not every fertilized egg makes it this far. It’s common to start with, say, 12 eggs and end up with three to five blastocysts, though numbers vary widely.
If you’re doing genetic screening, the lab removes a few cells from the outer layer of each blastocyst and sends them for testing. This checks whether each embryo has the correct number of chromosomes, which is the most common reason embryos fail to implant or result in miscarriage. Results typically take one to two weeks. Genetic testing adds $3,000 to $4,000 to the overall cost but gives you information about which embryos have the best chance of becoming a healthy pregnancy.
Fresh Transfer vs. Frozen Transfer
Your embryo can be transferred back into your uterus in one of two ways. A fresh transfer happens about five days after egg retrieval, during the same cycle. A frozen transfer means all embryos are cryopreserved first, and you return weeks or even months later for a separate transfer cycle. Frozen transfers have become increasingly common, partly because they allow your body to recover from stimulation before pregnancy and partly because they’re necessary if you’re doing genetic testing.
Research comparing the two approaches shows similar success rates. One large trial found live birth rates of about 28% for frozen transfers versus 34% for fresh transfers, a difference that was not statistically significant. Frozen transfers did carry a lower risk of ovarian hyperstimulation syndrome (3.6% vs. 8.1%), while fresh transfers were less expensive overall since they avoid the extra freezing, storage, and thaw cycle costs.
The transfer itself is anticlimactic compared to the rest of the process. It feels similar to a Pap smear. The doctor threads a thin catheter through your cervix and deposits the embryo using ultrasound guidance. There’s no anesthesia needed, the whole thing takes about five minutes, and you can usually go back to normal activities the same day.
The Two-Week Wait
After the transfer, you wait roughly 12 days before returning for a blood pregnancy test. This stretch is widely considered the hardest part of IVF, not because of anything physical but because of the uncertainty. You’ll be taking progesterone daily during this time, either as vaginal suppositories, intramuscular injections, or both, to support the uterine lining.
The frustrating reality is that progesterone side effects mimic early pregnancy almost perfectly. Cramping, spotting, sore breasts, bloating, and fatigue can all be caused by the medication alone. Having no symptoms at all is also completely normal and doesn’t mean the transfer failed. There’s genuinely no way to interpret what your body is telling you during this window, which is why most fertility clinics encourage patients to avoid home pregnancy tests and wait for the blood draw.
Ovarian Hyperstimulation Syndrome
The most significant physical risk of IVF is ovarian hyperstimulation syndrome, or OHSS, which happens when the ovaries overreact to stimulation medications. Mild forms are common and typically resolve within a week. Symptoms include abdominal bloating, nausea, vomiting, diarrhea, and tenderness around the ovaries.
Severe OHSS is uncommon but can be dangerous. Warning signs include rapid weight gain (more than about two pounds in 24 hours), severe abdominal pain, shortness of breath, decreased urination, and a noticeably swollen abdomen. Risk factors include polycystic ovary syndrome, being under 35, low body weight, and having a large number of follicles develop during stimulation. Your clinic will monitor for these signs and may recommend a freeze-all approach instead of a fresh transfer to reduce the risk.
What It Costs
A single IVF cycle in the U.S. typically runs between $12,000 and $21,000 for the clinical and lab fees alone. If you freeze all embryos and do a separate frozen transfer later, you’re looking at an additional $4,000 to $7,000 for the transfer cycle. Adding genetic testing pushes the total to roughly $11,000 to $24,000 before medications, anesthesia, and monitoring bloodwork are factored in.
Medications alone can cost $3,000 to $6,000 per cycle depending on your dosage and insurance coverage. Many people go through more than one cycle. Some states mandate insurance coverage for fertility treatment, but many don’t, and even mandated coverage varies widely in what it actually pays for. Clinics typically offer payment plans, and third-party fertility financing is available, though interest rates vary.
The Emotional Side
What often catches people off guard about IVF isn’t the needles or the procedures. It’s the emotional weight of the process. Every stage comes with a numbers drop: not all follicles contain eggs, not all eggs are mature, not all mature eggs fertilize, not all fertilized eggs become blastocysts, and not all blastocysts are chromosomally normal. Each update from the lab can feel like a small loss or a small win, and the cumulative effect is exhausting.
The hormones amplify everything. Many people describe feeling emotionally raw during stimulation, irritable during the progesterone phase, and anxious throughout. The process also disrupts daily life in practical ways: frequent morning clinic visits before work, strict injection schedules, physical discomfort that limits activity, and the mental bandwidth it consumes. If you’re going through IVF while working a full-time job, expect to need flexibility for appointments and at least one to two days off around the retrieval.