NHS endometriosis waiting times: how long, and how to be seen faster

People search for “the” endometriosis waiting time as if there is one number. There is not. Endometriosis is investigated and treated by gynaecology, and the gynaecology wait is set by the individual NHS trust your referral lands at. The spread between trusts is large: for the same kind of appointment, one hospital's median wait can be several times another's, often for hospitals within easy travelling distance of each other.

Because these figures move every month, the useful thing is to look up your own area rather than trust a number in an article. You can see every English trust's current gynaecology wait, ranked shortest first:

Compare gynaecology waits by hospital

Endometriosis is a condition where tissue similar to the lining of the womb grows outside the uterus — on the ovaries, the fallopian tubes, the lining of the pelvis, and sometimes the bowel or bladder. It can cause severe period pain, chronic pelvic pain, pain during or after sex, painful bowel movements or urination around periods, heavy bleeding, fatigue, and difficulty getting pregnant. A closely related condition, adenomyosis, is where similar tissue grows into the muscular wall of the womb itself, typically causing heavy, painful periods and an enlarged, tender uterus. The two often occur together.

The reason diagnosis is so slow is partly biological and partly systemic. Period and pelvic pain are frequently normalised or put down to other causes, so people are often unwell for years before endometriosis is even suspected. A pelvic ultrasound can look entirely normal even when endometriosis is present — a normal scan does not rule it out — and for many people the condition can only be confirmed by looking inside with a laparoscopy. UK research has repeatedly put the average time from first symptoms to diagnosis at close to eight years. Long delays and severe symptoms are exactly the situations that deserve to be pushed on, not accepted.

The route is broadly the same across England, and understanding it helps you see where the waits — and your choices — sit:

1. Your GP. They take your history, may examine you, and often arrange a pelvic or transvaginal ultrasound. NHS guidance is clear that a normal examination or scan does not rule endometriosis out, so if symptoms persist you should still be referred on.
2. Gynaecology outpatient appointment. A specialist reviews you, arranges further imaging if needed, and discusses treatment options. This is the referral where your Right to Choose applies.
3. Imaging. Ultrasound is the usual first scan and can pick up ovarian cysts (endometriomas) and some signs of deep disease; MRI is used to map deeper or more complex endometriosis and to assess adenomyosis. Many endometriosis referrals need a scan, so it is worth knowing that scan waits vary between hospitals too — you can compare NHS ultrasound waiting times the same way.
4. Laparoscopy. Keyhole surgery remains the way to confirm many cases and to treat the disease at the same time, by removing or destroying the endometriosis tissue. Complex or deep cases may be referred to a specialist accredited endometriosis centre.

Almost everything on this page is about planned care — the gynaecology waits for investigating and treating endometriosis. But some symptoms need urgent assessment the same day, and it is important to know the difference.

Sudden severe pelvic pain, or heavy vaginal bleeding with dizziness or fainting, needs urgent assessment through A&E or NHS 111 — not a waiting list. And if there is any chance you could be pregnant, one-sided pelvic pain together with shoulder-tip pain can be a sign of an ectopic pregnancy, which is a medical emergency: go to A&E. These are not things to wait on, and they are not what the comparison tool is for.

For the ongoing, planned picture — a long-standing suspicion of endometriosis, a referral that has stalled, symptoms that are being managed but not resolved — the rest of this guide, and your Right to Choose, is where the leverage is.

This is the part most patients are never told. In England you have a legal right, at the point your GP refers you, to choose which hospital or clinic you are sent to for a planned gynaecology appointment — and that includes choosing one with a shorter waiting list. It is called the NHS Right to Choose, and it costs nothing.

In practice, most referrals go to the nearest hospital by default, even when somewhere nearby is seeing people far sooner. If you have been waiting a long time, or your symptoms are severe, you are entitled to ask to be seen somewhere faster. The site even drafts the letter to take to your GP:

How the Right to Choose works

Generate a Right-to-Choose letter for your GP

1. Look up the current gynaecology waits near you on the national gynaecology ranking — see every hospital ranked by wait, and compare the ones within reach of you.
2. Weigh a shorter wait against travel. Follow-up appointments, scans and any surgery happen at the treating hospital too, so a much further one is a real trade-off. Talk it through with your GP.
3. If a faster hospital suits you, ask your GP to refer you there under Right to Choose. Take the drafted letter with you.

Some people decide to pay for a private gynaecology appointment or laparoscopy to avoid a long wait, and for some that is the right call — a number of people also have private medical insurance through work that they had forgotten covers it. If you are weighing that up, it is worth doing it with clear eyes: self-pay prices vary a great deal by provider and by how complex the surgery is, so get current quotes directly rather than trusting a fixed figure.

One thing worth checking first, though: whether a faster NHS trust is actually available to you under your Right to Choose. Going private is one honest route among several, not the only one — and many people pay for a wait they could have shortened for free. The comparison tool shows the NHS options, so you can make the decision knowing what the free route would have got you.

How long is the NHS wait to be seen for suspected endometriosis?

There is no single national number. Endometriosis is investigated by gynaecology, and the wait for a gynaecology appointment is set by the individual NHS trust your GP refers you to — those waits vary several-fold, with the slowest trusts often many months behind the fastest ones a similar distance away. Because the figure changes every month, look up your own area rather than trust a number in an article: the trust-by-trust median wait for gynaecology is published on hospitalwaits.co.uk/national/gynaecology.

Why does endometriosis take so long to diagnose?

UK research has repeatedly found an average of close to eight years between a woman first reporting symptoms and being diagnosed. Several things stack up: period pain and pelvic pain are often normalised or mistaken for other conditions, a pelvic ultrasound can look completely normal even when endometriosis is present, and the definitive diagnosis of many cases still needs a laparoscopy (keyhole surgery) to look inside. Each step — GP, gynaecology outpatient appointment, scan, then laparoscopy — carries its own waiting list, and the total is what feels so long. You cannot remove the steps, but Right to Choose lets you pick faster trusts for the referral and the surgery.

Can I choose a hospital with a shorter gynaecology wait?

Yes. In England you have a legal right, at the point your GP refers you, to choose which hospital or clinic you are sent to for a planned gynaecology appointment — including one with a shorter waiting list. This is the NHS 'Right to Choose', and it costs nothing. Most patients are never told about it and simply go to their nearest hospital by default, even when somewhere nearby is seeing people sooner. For complex or deep endometriosis you may be referred on to a specialist accredited endometriosis centre, which is a separate step worth asking about.

When is pelvic pain an emergency rather than a waiting-list issue?

Endometriosis itself is a planned referral, but some symptoms need urgent assessment the same day, not a waiting list. Sudden severe pelvic pain, or heavy vaginal bleeding with dizziness or fainting, needs urgent care through A&E or NHS 111. And if there is any chance you could be pregnant, one-sided pelvic pain together with shoulder-tip pain can be a sign of an ectopic pregnancy and is a medical emergency — go to A&E. These are not things to wait on. This guide is about the planned gynaecology waits for investigating and treating endometriosis, which is a different situation.

Everything on HospitalWaits comes from NHS England's own monthly Referral-to-Treatment and diagnostic waiting-time data, and every figure links to its NHS source so you can check it. The methodology, including the known limitations, is public. Nothing here is medical advice — the site surfaces the published waiting-time data so you and your GP can use it.