How IVF works, step by step

What IVF is, in simple terms

IVF stands for in vitro fertilization. In plain words, eggs are collected from the ovaries, combined with sperm in a lab, and one embryo may later be placed into the uterus.

People may look into IVF for many reasons, including blocked tubes, ovulation problems, low sperm counts, unexplained infertility, some genetic concerns, or after other treatments have not worked. IVF can also be part of care involving donor eggs, donor sperm, or gestational surrogacy. You can compare IVF with other treatments if you are still deciding what questions to ask.

CoralConceive is not a clinic or medical provider. We share general education and can help you get matched for free with fertility clinics near you, but a licensed fertility doctor should advise you about your own situation.

Step 1: Testing, planning, and cycle prep

Before an IVF cycle starts, a clinic usually does fertility testing and a planning visit. This may include bloodwork, an ultrasound, and a semen analysis, along with a review of your health history and goals. The doctor uses that information to suggest a medication plan and explain possible next steps.

Some people start with birth control pills or other medicines to help time the cycle. Others may begin more directly, depending on the clinic's approach and the doctor's recommendation. The planning stage is also when you may talk about extra lab options, genetic testing, frozen versus fresh embryo transfer, and whether ICSI might be used.

This early stage is a good time to ask for a written estimate, a sample calendar, and a list of what is included or not included in the clinic's fee. Costs can vary a lot, so it helps to review costs before you commit.

• Testing usually happens before medications start
• The treatment plan is personalized
• Ask what the quoted price includes

Step 2: Ovarian stimulation and monitoring

In a typical IVF cycle, the ovaries are stimulated with hormone medications for about 8 to 14 days so multiple eggs can mature at once. During this time, you usually have several monitoring visits for blood tests and ultrasounds. Those visits help the clinic adjust medications and decide when the eggs are ready.

When the follicles reach the right stage, you take a final "trigger" medication to prepare for egg retrieval. Timing matters here, so clinics usually give very specific instructions.

Many people want to know whether this part is painful. Experiences vary. Some people mainly notice bloating, pressure, bruising from injections, or strong emotions. A fertility doctor can explain what to expect in your case and what side effects should be reported right away.

Step 3: Egg retrieval, fertilization, and embryo growth

Egg retrieval is a short procedure done at the clinic or surgery center, usually with sedation. A doctor uses ultrasound guidance to collect eggs from the ovaries. Most people go home the same day, but may feel cramping, bloating, or tiredness afterward.

The eggs are then examined in the lab. Mature eggs are combined with sperm, either by standard insemination or sometimes by ICSI, where a single sperm is injected into an egg. Not every egg is mature, not every mature egg fertilizes, and not every fertilized egg becomes a usable embryo. That drop-off is normal and one reason IVF results can be hard to predict.

Embryos are watched for several days in the lab, often until day 5, 6, or 7. Some may be frozen for later use. In some cases, a clinic may discuss genetic testing of embryos, but whether that is useful depends on the person and should be reviewed with a licensed fertility doctor.

Step 4: Embryo transfer and the wait for results

If the plan is a fresh transfer, one embryo may be placed into the uterus a few days after retrieval. If the plan is a frozen transfer, the embryo is transferred in a later cycle after the uterine lining is prepared. The transfer itself is usually much simpler than retrieval and often does not require sedation.

After transfer, there is usually a waiting period of about 9 to 14 days before a pregnancy blood test. This can be one of the hardest parts emotionally. It is common to feel hopeful, nervous, and exhausted all at once.

If a cycle does not lead to pregnancy, that does not always mean IVF cannot work for you. Some people need more than one cycle, and the next step depends on age, embryo results, diagnosis, and how the doctor thinks about the overall plan. Our guide on understanding success rates can help you ask better questions without assuming any guarantee.

Timeline, cost, and success rates: the honest version

A single IVF cycle often takes several weeks from the start of medications to egg retrieval or transfer, but the full process can take longer when you include testing, scheduling, insurance review, frozen transfers, or waiting between cycles. If you want a fuller timeline, see how long IVF takes.

Typical IVF costs in the US can be many thousands of dollars per cycle. A common general range for one IVF cycle is around $15,000 to $30,000+, but the total can be higher depending on medications, monitoring, anesthesia, ICSI, genetic testing, embryo freezing and storage, and future transfer fees. Insurance coverage varies a lot by plan and state.

Success rates also vary widely. Age is a major factor, but diagnosis, egg and sperm quality, embryo development, lab quality, and clinic practices matter too. No ethical clinic or service can promise a pregnancy or a baby from one cycle. If you want help comparing options, CoralConceive can get matched with clinics for free, but the clinic should explain the medical details for your situation.

• Typical total cost is often higher than the base cycle fee
• Medications and lab add-ons may be billed separately
• Success rates depend on age, diagnosis, and clinic