In Vitro Fertilization

In vitro fertilisation (IVF) is a fertility treatment in which a woman's egg and a man's sperm are joined in a laboratory dish, outside the body, and the resulting embryo is placed in the womb to cause a pregnancy (NHS). If you have been told IVF may help, or you are weighing doing it abroad, you do not need to make that decision in the dark. It is the most involved of the fertility treatments, and it does not work for everyone, but the pathway is well understood, and the practical questions, how long it takes, what each step feels like, and how to protect the cycle and the follow-up, have clear answers.

One safety rule comes first. During or after the medication stage of a cycle, or after egg retrieval, seek urgent local medical care now, without waiting for a planned appointment or a flight, if you develop any of these: severe or worsening pelvic or abdominal pain, rapid weight gain or severe bloating, severe and persistent nausea and vomiting, shortness of breath, much less urination than usual, a fever, or heavy vaginal bleeding (NHS, MedlinePlus). These can signal a complication that needs prompt treatment, not a cancelled visit (NHS).

This guide walks you through what happens from your first fertility assessment to the pregnancy test, explains why each step exists, gives you the questions to ask, and tells you how to protect yourself if the cycle is done abroad.

What IVF is

In vitro fertilisation is a method of assisted reproduction in which a man's sperm and a woman's eggs are combined outside the body in a laboratory dish (ASRM). The phrase in vitro simply means outside the body: the joining of egg and sperm happens in the lab instead of in the fallopian tube, and the embryo is then transferred into the womb (MedlinePlus). It belongs to the wider family of assisted reproductive technologies, the special medical techniques used to help a woman become pregnant, and it is most often tried after cheaper, less invasive fertility treatments have failed (MedlinePlus).

On MedicalTourism.Review, IVF sits under Fertility Treatment and comes in several closely related versions, each with its own page:

• Conventional IVF is the reference version described here: motile sperm are placed together with the eggs and incubated overnight so fertilisation happens naturally in the dish (ASRM).
• ICSI (intracytoplasmic sperm injection) injects a single sperm directly into each mature egg, used when the chance of fertilisation is low, most often for severe male factor; the ICSI page covers it in depth (MedlinePlus).
• Frozen embryo transfer thaws and places an embryo that was already made and stored, so a later cycle can skip the whole stimulation and retrieval (frozen embryo transfer, MedlinePlus).
• IVF with donor eggs, sperm or embryos uses donated cells or embryos when the couple's own are not viable or do not exist at all (egg donation, embryo donation).
• Assisted laser hatching helps an embryo break out of its outer shell before it is transferred (assisted laser hatching).

Many couples also try simpler steps first: intrauterine insemination (IUI), where sperm are placed in the uterus but conception still happens naturally inside the body; artificial insemination with donor sperm; or Clomid treatment, tablets that encourage ovulation. Others freeze their own eggs, embryos or sperm for the future (egg freezing, egg and ovarian cortex freezing, embryo freezing, embryo, oocyte and sperm cryopreservation, semen freezing). Those are separate services; this page covers the IVF cycle itself.

IVF is also coordinated across a team rather than one clinic. It sits under the obstetrics and gynecology specialists who oversee it, starts with a fertility assessment and check-up, relies on diagnostics for the hormone and semen tests, on radiology scans to watch the follicles and the womb, and on the pathology lab when any genetic testing of embryos is done. And if an underlying cause needs an operation, blocked tubes, endometriosis, fibroids, that is routed to surgery rather than covered here.

How IVF works

The cycle runs about three to six weeks and follows the same basic steps in the same order: ovarian stimulation, egg retrieval, fertilisation, embryo culture and embryo transfer (NHS, ASRM).

First contact and assessment. The pathway begins long before any needle. At the initial consultation the clinic reviews your history and runs tests that tell it whether IVF is the right tool and how to dose the drugs: a semen analysis, blood tests for the hormones that reflect your egg reserve, and a transvaginal ultrasound that counts the small resting follicles (the antral follicle count, an estimate of the egg supply still available). These tests exist to tailor the plan to you rather than apply a standard recipe (NHS).

Ovarian stimulation. For roughly two weeks you take injectable fertility drugs that coax several eggs to grow at once instead of the single egg normally released each month. This step exists because a cycle can only use the eggs that are available, and more eggs mean more embryos to choose from. The clinic watches the follicles grow with transvaginal ultrasound and blood tests, adjusting the dose as it goes (ASRM).

Egg retrieval, the surgical step. When the follicles are ready, a doctor collects the eggs using a needle guided by ultrasound and passed through the vagina into the ovaries. It takes about twenty minutes and you are offered a sedative to keep you sleepy and comfortable (NHS). It is a minor surgery, follicular aspiration, and like any procedure done under pain medicine it carries the small surgical risks covered later (MedlinePlus).

Fertilisation. That same day the lab joins your partner's sperm with the eggs, either by conventional insemination, placing motile sperm with the eggs, or by ICSI, injecting a single sperm into each mature egg when fertilisation is unlikely to happen on its own (ASRM).

Embryo culture. Over the next few days the fertilised eggs divide and become embryos, which lab staff check regularly; within about five days a normal embryo has several actively dividing cells (MedlinePlus).

Embryo transfer. This is brief and needs no anaesthetic. One or more embryos are drawn into a thin catheter and gently guided through the cervix into the womb (ASRM).

Support and the two-week wait. Afterwards you take progesterone, by pill or daily injection, for roughly eight to ten weeks to support the lining of the womb, and then wait out the two-week wait before a pregnancy test about sixteen days after transfer. Any leftover healthy embryos may be frozen, so a future transfer might not need a fresh stimulation and retrieval at all (ASRM, MedlinePlus).

Who it is for, and when not to wait

IVF treats many causes of infertility: blocked, damaged or absent fallopian tubes, endometriosis, male factor problems such as a low sperm count or a blockage, unexplained infertility, advanced maternal age, and polycystic ovary syndrome (MedlinePlus). It also serves people who need donor eggs, sperm or embryos, and same-sex and single parents building families (ASRM).

But not everyone who finds conceiving hard needs IVF. If you have been trying to get pregnant without success, ask your GP or a fertility clinic whether IVF is right for you; sooner if tests show you are unlikely to get pregnant without IVF (NHS).

Waiting has a real cost. A woman's fertility declines with age, more sharply after 35 and more steeply in the years that follow, largely because fewer eggs remain and they are of poorer quality (ASRM). Success tracks that decline: after a pregnancy is detected on scan, the chance of miscarriage rises from about 15% under 35 to 25% at 40 and 35% at 42, roughly one in seven pregnancies, one in four, then one in three, and cycles using a woman's own eggs are cancelled more often as age climbs, especially after 35 (ASRM). Some causes will not simply resolve on their own, blocked tubes stay blocked, and severe male factor does not fix itself, so delay does not improve the outlook. Choosing not to have IVF, or choosing adoption or donor options instead, is a valid and legitimate decision, and this page does not push you toward a cycle. The honest picture is simply that age is the one factor that does not wait for you.

If symptoms flare during a cycle, the rule from the opening applies: do not wait for a planned visit or a flight (NHS).

How to prepare

Careful preparation protects the cycle and your recovery:

• Gather prior fertility results and scans, so the clinic sees your baseline instead of repeating tests you have already had.
• List every medication and supplement, because some interact with the stimulation drugs or with the anaesthetic used for retrieval.
• Start folic acid and adjust pre-conception habits now, so your body is ready before stimulation begins.
• Plan time off work you can actually take, a cycle runs three to six weeks with frequent clinic visits (NHS).
• If going abroad, arrange a stay you can keep and a language plan for the clinic's instructions, plus insurance that covers assisted reproduction.
• Arrange emotional support, IVF demands a great deal of physical and emotional energy, and many couples find it stressful (MedlinePlus).

Write these questions down and ask them at the consultation:

• "What is my realistic chance of a live birth per cycle, for my age and my cause of infertility, and how many cycles does that imply?"
• "How many embryos will you transfer, and why that number?"
• "If I develop ovarian hyperstimulation syndrome, how will it be managed, and who pays if it happens while I am abroad?"
• "Which facility performs the egg retrieval, and what emergency and blood-bank backup does it have?"
• "What exactly does the package price include, and what would a second cycle cost?"

What to expect, risks and recovery

The benefit of IVF is a pregnancy, and for some people it is the only realistic route to a child. But success is not guaranteed, and it falls with age; the number of embryos transferred is a complex decision that depends on several factors, above all the woman's age (MedlinePlus).

The risks are real and mostly belong to two parts of the cycle, the medication and the surgical retrieval (ASRM).

• Egg retrieval. The needle could cause bleeding or infection, or damage to the bowel, bladder or a blood vessel, and there are the usual risks of a reaction to the anaesthetic or sedative (MedlinePlus).
• Ovarian hyperstimulation syndrome (OHSS). There is a small chance of too many eggs developing, which can make the ovaries large and painful; the worse form can bring rapid weight gain and shortness of breath (NHS, MedlinePlus).
• Multiple pregnancy. Transferring more than one embryo raises the chance of twins or more, which carries higher risks of premature birth and low birth weight; this is why many clinics increasingly move toward transferring a single embryo (MedlinePlus).
• Ectopic pregnancy and miscarriage. A pregnancy can implant outside the womb, and miscarriage rises with the woman's age, as noted above (ASRM).
• The emotional toll. IVF involves large amounts of physical and emotional energy, time and money, and many couples dealing with infertility suffer stress and depression (MedlinePlus).

Recovery is quick for most people: you can usually return to normal activities the next day, and cramping on the day of retrieval usually settles by the next day (MedlinePlus, ASRM).

The risks of treatment and the risks of waiting

Neither side of this decision can be shrunk away. Having IVF means accepting the medication and surgical risks above, plus a live birth that is not promised, especially at older ages (ASRM). Not having it means leaving the problem to time, and time works against you: fertility declines after 35, success falls with age, and causes like blocked tubes or severe male factor do not fix themselves (ASRM). The honest summary is that IVF is a real, sometimes difficult operation with genuine risks, and that for many couples the risk of waiting is equally real (NHS). That balance is yours to weigh, with a doctor and, if you choose, a clinic abroad you trust (ASRM, NHS).

Finding IVF abroad on MTR

Travelling for IVF is common, and it offers self-paying couples access to care and shorter waits, but a cycle abroad needs more planning than price alone suggests:

• Read the success claim, not just the headline. Ask whether the figure is a live-birth rate or a clinical-pregnancy rate (a pregnancy that reaches a scan), broken down by age, for fresh versus frozen transfers, and how many embryos were transferred. A single big number hides a lot. For context, egg-donation IVF achieves a live birth in over 50% of transfers nationally, roughly one in two, which for many couples is the best chance of success (ASRM).
• Confirm the retrieval is done in an accredited facility with emergency capability and blood-bank backup, and ask who is qualified to run the procedure, because egg retrieval is minor surgery.
• Plan for more than one cycle. Many couples need several, and each runs months; budget a realistic stay, not a single visit, and sort out where you will stay.
• Arrange aftercare and a complication route. Get a written aftercare plan and English-language records so your home doctor can continue care, and agree in advance who treats an OHSS or a clot back home and who pays.
• Get insurance that covers assisted reproduction and medical evacuation, since standard travel policies often exclude it.
• Check the flying rules with the clinic. Ask the clinic how OHSS and clot risk affect when it is safe to fly, after egg retrieval and while on a stimulation cycle.

To compare accredited providers, use the IVF provider directory and our guide to top medical tourism destinations, judging clinics on verified per-age live-birth rates, accreditation and an aftercare plan, not on a single number.

This week, book a fertility assessment, gather any prior results and scans, and write down your questions, starting with your realistic chance per cycle and what a complication would mean if you were abroad.

Medical disclaimer: This information is for general educational purposes and is not medical advice. Always consult a qualified healthcare professional about your individual situation.

Reviewed against authoritative medical sources (MedlinePlus, the US National Library of Medicine; the NHS, UK; the American Society for Reproductive Medicine, ASRM).

Last reviewed: 4 November 2026