Get Better Health, Weekly
HomeAboutTopicsNewsletterCommunity
Get Better Health, Weekly
Get Better Health, Weekly
HomeAboutTopicsNewsletterCommunity
Get Better Health, Weekly
A woman sitting on a bed in morning light with one hand resting on her lower abdomen
Women's Health

Endometriosis: 6 Symptoms to Track, and Why Pain Level Does Not Show How Bad It Is

Mayo Clinic names six symptoms of endometriosis, and says the seriousness of the pain may not reflect how much tissue is actually there.

Ageless Coach Editorial Team · September 7, 2026

In 30 Seconds
Six symptoms, one condition. Mayo Clinic names painful periods, pain with sex, pain with bowel movements or urination, excessive bleeding, infertility, and a cluster of fatigue, diarrhea, constipation, bloating and nausea. Mayo Clinic
Pain does not measure severity. Mayo Clinic says a small amount of tissue can come with bad pain, and a lot of endometriosis tissue can come with little or none. Mayo Clinic
Diagnosis takes years. WHO says the average time to diagnosis is between 4 and 12 years, and that endometriosis affects an estimated 10 percent of reproductive age women, about 190 million people. WHO

Endometriosis has six recognised symptoms. How much it hurts tells you almost nothing about how much tissue is there.

Tissue like the lining of the uterus grows outside it. Every cycle it thickens, breaks down and bleeds, with no way to leave the body. What is left behind is irritation, scar tissue and adhesions.

Below are the six symptoms. Then the reason a pain level misleads. Then what actually confirms it. That last part is where most of the delay lives.

1
The Signs · 6

Six symptoms, and the one that usually comes first

Mayo Clinic says the main symptom of endometriosis is pelvic pain, and that it is often linked with menstrual periods.

Plenty of people cramp during a period. Mayo Clinic says those with endometriosis often describe pain far worse than usual. It also says the pain may get worse over time.

  1. Painful periods. Mayo Clinic says pelvic pain and cramping may start before a period and last for days into it, and may come with lower back and stomach pain. The clinical name for painful periods is dysmenorrhea.
  2. Pain with sex. Mayo Clinic says pain during or after sex is common with endometriosis.
  3. Pain with bowel movements or urination. Mayo Clinic says you are most likely to have these symptoms before or during a menstrual period.
  4. Excessive bleeding. Mayo Clinic names heavy menstrual periods, or bleeding between periods.
  5. Infertility. Mayo Clinic says that for some people, endometriosis is first found during tests for infertility treatment.
  6. Fatigue and gut symptoms. Mayo Clinic names fatigue, diarrhea, constipation, bloating and nausea, and says these are more common before or during menstrual periods.
10%
WHO says endometriosis affects an estimated 10 percent of reproductive age women worldwide, about 190 million people.
Source: WHO

Some people have no symptoms at all. Mayo Clinic says they often find out when they cannot get pregnant, or after surgery for something else.

That is part of why the six matter. For most people they are the only early signal there is.

2
The Mismatch

Why the pain level does not measure the disease

WHO says there is no cure for endometriosis right now. It says treatment aims to control symptoms and limit long term harm.

That makes early recognition the lever. Recognition is exactly where this condition is slippery.

A woman sitting at home with a worried expression, one hand raised to her face
Mayo Clinic says a little tissue can hurt badly, and a lot of tissue can hurt very little.

Mayo Clinic states it plainly. The seriousness of your pain may not be a sign of the number or extent of endometriosis growths in your body.

You could have a small amount of tissue with bad pain. You could have a lot of tissue with little or no pain.

So a pain score is not a triage tool here. Neither is toughing it out. The pattern and the timing are what carry the information.

The seriousness of your pain may not be a sign of the number or extent of endometriosis growths in your body.

Mayo Clinic

Take the six symptoms with you

One printable sheet: the six symptoms by cycle day, the conditions it gets mistaken for, and the questions to ask about imaging. Free, unlocked right here.

Joins the free weekly Ageless Brief. Unsubscribe anytime.

Enter your email to unlock your plan

Your 1-page endometriosis plan, unlocked right here.

No spam. One short evidence brief each week. Unsubscribe anytime.

Your plan is ready

Download or print it below. Save it anywhere.

⬇ Download your plan (PDF)
Your first Ageless Brief arrives this week: one study, translated, no hype.
3
The Diagnosis

What confirms it, and what only points at it

Cleveland Clinic says a diagnosis usually starts with your symptoms. Then a medical and family history. Then a pelvic exam, and imaging such as an ultrasound or MRI.

It also says only one test settles it. A laparoscopy, using a small camera to look inside the pelvis and take a tissue sample for the lab.

A hand writing in an open monthly planner resting on a wooden bench
WHO says a careful menstrual health history helps with diagnosis of endometriosis.
4 to 12 years
WHO says the average time to diagnosis of endometriosis is currently between 4 and 12 years.
Source: WHO

WHO says a careful menstrual health history helps with diagnosis. That means pain, heaviness of bleeding, and the symptoms that come with them. It is a conversation, not a scan.

WHO also says a clinical diagnosis can be made on symptoms and imaging such as ultrasound or MRI. Surgery is not always necessary.

Cleveland Clinic says the treatment plan depends on four things. How severe the endometriosis is, plans for a future pregnancy, age, and how severe the symptoms are. Over the counter anti inflammatory drugs such as ibuprofen can help. Hormonal therapies, including hormonal birth control, are another option.

Which means the useful thing to carry into an appointment is a record, not a rating.

Sorted

Three endometriosis beliefs that do not hold

Three ideas add years to a diagnosis that already takes years. Each one has a published answer.

Bad period pain is just normal. Mayo Clinic says people with endometriosis often describe menstrual pain far worse than usual. It says the pain may get worse over time. WHO says the average time to diagnosis is between 4 and 12 years. Treating the pain as normal is a large part of why.

It is probably just IBS. Mayo Clinic says endometriosis may be confused with irritable bowel syndrome. IBS causes bouts of diarrhea, constipation and stomach cramps. It can also happen alongside endometriosis. Mayo Clinic names pelvic inflammatory disease and ovarian cysts as two more look alikes.

If it hurts this much it must be advanced. Mayo Clinic says how bad the pain is may not show the number or extent of growths. A small amount of tissue can hurt badly. A lot of tissue can hurt very little.

📋Your Coach's Recommendations
1
Log three cycles before the appointment.
WHO says a careful menstrual health history covering pain, heaviness of bleeding and associated symptoms helps with diagnosis. Record the six symptoms Mayo Clinic names, by day of cycle, across three cycles. Bring the record rather than a description.
2
Name the pattern, not the pain score.
Mayo Clinic says the seriousness of pain may not reflect how much tissue is present, and that endometriosis is sometimes mistaken for IBS, pelvic inflammatory disease or ovarian cysts. Say which symptoms cluster around your period, because the timing is what separates them.
3
Ask what imaging comes first, and what confirms it.
Cleveland Clinic says diagnosis may begin with a pelvic exam and imaging such as ultrasound or MRI, and that laparoscopy is the only definitive test. WHO says a clinical diagnosis can be made on symptoms and imaging, and that surgery is not always necessary. Ask which path applies to you.

To your health,

Ageless Coach

Age Strong. Live Long.

Trusted Sources Behind This Article
Mayo ClinicWHOCleveland Clinic

This article is education, not medical advice. Mayo Clinic says to see a member of your health care team if you think you might have symptoms of endometriosis. WHO says there is currently no cure for endometriosis and that treatment aims to control symptoms and limit long term impacts. Ageless Coach is an affiliate partner and may earn a commission on purchases made through links on this page.

Frequently Asked Questions

How do I know if my period pain is normal or not?
Mayo Clinic says people with endometriosis often describe menstrual pain far worse than usual, and pain that may get worse over time. Pain that starts before the period, lasts days into it, and comes with lower back or stomach pain is the pattern worth raising with a provider.
Why does a diagnosis take so long?
WHO says symptoms are variable and broad, which means health and care workers may not easily diagnose it, and that the average time to diagnosis is currently between 4 and 12 years. Some people with endometriosis have no symptoms at all.
Can endometriosis be mistaken for IBS?
Yes. Mayo Clinic says endometriosis may be confused with irritable bowel syndrome, which causes bouts of diarrhea, constipation and stomach cramps, and that IBS can also occur alongside endometriosis, which makes finding the exact cause harder.
Do I need surgery to find out if I have it?
Not always. Cleveland Clinic says the only way to definitively diagnose endometriosis is a laparoscopy, but WHO says a clinical diagnosis can also be made on the basis of symptoms and imaging tests such as ultrasound or MRI, and that surgery is not necessary in every case.
What can I do about the pain while I wait?
Cleveland Clinic says over the counter anti inflammatory drugs such as ibuprofen can help with pain, and that hormonal therapies including hormonal birth control are another option that can suppress the menstrual cycle.
Wondering where you stand overall? Take the free 5-minute Healthspan Snapshot and see your strongest and weakest of six dimensions.