A Failed IVF Cycle: What Went Wrong and What Comes Next

The honest picture, with numbers

The first thing worth saying is the thing clinics say least clearly in advance. The HFEA states it directly: around three quarters of IVF treatment is unsuccessful. A cycle that does not work is the ordinary outcome, not a sign that something unusual happened to you.

That does not make it small. The HFEA quotes a patient describing a failed cycle as feeling like a bereavement — the loss of a child already pictured through every stage of the process. Both things are true at once: statistically expected, personally enormous.

What a failed cycle can be, once the worst of it has passed, is information. It is the first time anyone has data on how your ovaries respond, how your eggs fertilise and how your embryos develop. A second cycle designed without that data would be a waste of it.

The two families of reasons

The HFEA groups the causes into two, and knowing which applies to you changes what should happen next.

The embryos failed to develop in the womb

This is the most common reason, and the HFEA is honest that there is often no obvious explanation. The possibilities it lists are that the egg may not have matured properly or may not have divided as it should after fertilisation, leading to failure to implant; that many embryos which look healthy have faulty chromosomes; and that poor blood flow to the womb can reduce the chance of pregnancy and raise the chance of miscarriage if conception occurs.

The cycle was cancelled before collection or transfer

The HFEA lists five specific scenarios: the ovaries do not respond to the stimulation drugs; the ovaries over-respond, risking hyperstimulation; no eggs are found at collection because the follicles that developed are empty; the collected eggs do not fertilise, so no embryos develop; or the embryos fail to develop in the laboratory and cannot be transferred.

These point in different directions. A poor response suggests revisiting the protocol and dose. Failed fertilisation is one of the two situations in which NG257 recommendation 1.50.2 says to consider ICSI. Embryos arresting in the laboratory is an embryology conversation. Treating all five as the same event — "it didn't work" — throws away the diagnosis.

The review consultation, and what to ask in it

Ask for a follow-up appointment specifically to review the cycle, and go in with the numbers rather than the feelings, which can have their own appointment. The useful sequence is:

• How many follicles developed, and how many eggs were collected?
• How many of those eggs were mature?
• How many fertilised, and by conventional insemination or ICSI?
• How many embryos were still developing on day three, and on day five?
• What were they graded, and how many were suitable to freeze?
• At which of those steps did this cycle differ from what you expected?
• What specifically would you change next time, and what evidence supports that change?

That last question is the one that separates a reasoned plan from a repeat.

What NICE says about doing it again

NG257 recommendation 1.39.7 addresses this directly for people under 40 who have not conceived after 3 full cycles: discuss the probability of success and the implications of more treatment, and consider up to 3 further full cycles. If they reach their 40th birthday without conceiving, complete any current full cycle but offer no more.

Recommendation 1.39.5 matters if your cycle was cancelled. Providers are asked to define a cancelled cycle as one where egg collection was not undertaken, and to take cancelled cycles due to low ovarian response into account when considering whether further IVF is suitable. Whether a cancelled attempt counts against your funded allocation is a question to ask in writing.

On timing, the HFEA notes that many experts recommend waiting a couple of months after treatment before trying again, both to let the body recover and to create space to decide rather than react.

Why the add-ons arrive now

This is the moment the market is designed for, and it helps to see it coming. The HFEA says so almost in those terms: after unsuccessful treatment you will understandably want to feel you are doing everything you can, and this is the situation in which patients and clinics discuss additional treatments known as add-ons, which often cost extra.

Its position on those is unchanged by your disappointment: there is no conclusive evidence that any of the commonly offered add-ons increase the chance of a pregnancy. Its rated list currently has no add-on rated green for improving the chance of having a baby for most fertility patients, and several sit at black or red. The HFEA's Code of Practice requires clinics to discuss the evidence supporting any add-on they offer you — so ask for that discussion explicitly, and ask whether the money would buy more by funding another routine cycle instead.

Deciding whether to stop

There is no correct number of cycles, and the HFEA does not pretend otherwise: some people want to keep going and others prefer to move on earlier, and it advises asking your doctor for an honest opinion about whether treatment is likely to work for you, since a very small chance may be a factor in deciding to stop. It also names the emotional cost as a legitimate part of the calculation rather than a weakness in it.

Counselling is provided for exactly this. The NHS says counselling is recommended for anyone having IVF and that clinics should offer it before, during and after treatment, and the HFEA notes that talking to an impartial professional can help when partners disagree about whether to continue.

What to do next

1. Book the review consultation and ask for the full cycle data, step by step.
2. Establish which of the HFEA's two families of reasons applies, because the fix differs.
3. Ask in writing whether a cancelled cycle counted against your funded allocation.
4. Ask what specifically will change next time and why, and be wary if the answer is only "add-ons".
5. Take the counselling, separately from the medical review.
6. Set a decision point in advance — how many more attempts, over what period, at what cost — while you are not in the middle of one.

When to seek help

Contact your clinic promptly if you have heavy or prolonged bleeding, severe pain, or symptoms of ovarian hyperstimulation after an unsuccessful cycle, and speak to your GP or the clinic's counselling service if low mood, hopelessness or difficulty functioning persists beyond the first weeks. Grief after a failed cycle is normal; being unable to see a way forward for weeks on end is a reason to ask for support rather than wait it out. If you have had repeated unsuccessful cycles, ask for a review with a different consultant or a second opinion at another licensed clinic before committing to another attempt.