There is a specific kind of pain that gets dismissed for years — by friends, by family, sometimes by doctors, and eventually by the person having it. Endometriosis takes most people years to have named, largely because everyone involved assumed bad periods were normal. They can be. They can also be a condition with a name and a treatment, and the only way to tell is to have it looked at.
Two different conditions, often confused
Both involve endometrial-type tissue growing where it shouldn't, and both cause pain — but they behave differently, and the distinction changes what treatment is offered.
| Condition | Where the tissue is |
|---|---|
| Endometriosis | outside the uterus — ovaries, pelvic lining, sometimes bowel or bladder |
| Adenomyosis | inside the muscular wall of the uterus itself |
| Endometrioma | an endometriosis cyst on the ovary, sometimes called a chocolate cyst |
Endometriosis tends to cause pain that spreads beyond the period itself; adenomyosis more often causes heavy bleeding and a uterus that feels tender and enlarged. Many women have both, and having one makes it worth asking about the other.
Signs it's more than an ordinary period
Pain that responds to a painkiller and lets you get on with your day is ordinary. These are the patterns worth taking to a doctor:
- Pain that stops you working, studying or sleeping, every cycle
- Pain that starts days before bleeding, or continues after it ends
- Pain during or after sex, deep rather than at the entrance
- Pain when passing urine or stool during your period
- Heavy bleeding, clots, or periods that leave you exhausted and anaemic
- Difficulty conceiving alongside any of the above
How it's diagnosed — and why it's often missed
This is where honesty helps more than reassurance. Ultrasound reliably shows endometriomas on the ovaries and the thickened uterine wall of adenomyosis. It does not reliably show superficial endometriosis, which can cause severe pain while a scan looks entirely normal.
- A detailed history — often the most informative part, which is why your symptom pattern matters
- Pelvic ultrasound — finds endometriomas and adenomyosis, misses superficial disease
- MRI — used in specific situations, particularly for deep disease
- Laparoscopy — the only way to see and confirm superficial endometriosis directly
A normal ultrasound therefore does not rule out endometriosis, and being told your scan is clear is not the same as being told nothing is wrong. If your pain fits the pattern, say so again — treatment is often started on symptoms rather than waiting for surgical proof.
What treatment can realistically do
Neither condition is cured by medication, and saying otherwise would be dishonest. What treatment does is suppress the tissue's monthly response, which is what causes the pain — and that is often enough to give you your month back.
- Pain management — anti-inflammatories taken before the pain peaks work better than taken after
- Hormonal suppression — continuous pill, progestin, or a hormonal IUD, which is particularly useful for adenomyosis and heavy bleeding
- Surgery — laparoscopic removal of endometriosis or an endometrioma, when medication isn't enough or fertility is affected
- Hysterectomy — definitive for adenomyosis, and only for those who have finished having children
Symptoms can return when treatment stops, which is not treatment failure — it's the nature of a condition driven by your cycle. The realistic goal is control that fits your life, reviewed as your life changes.
Fertility, and the long view
Endometriosis is associated with difficulty conceiving, and that association frightens people more than it should. Many women with endometriosis conceive without assistance. The condition makes it more likely that you will want help sooner, not that help won't work. If you'd rather know where you stand than keep waiting, what a first fertility check involves is set out separately.
Two practical points follow. If you have a diagnosis and know you want children, that is worth raising early rather than at the end of a long wait — the standard twelve-month rule is a general guideline, not a rule for someone with a known reason to check sooner. And if surgery on an ovary is being discussed, ask specifically how it might affect ovarian reserve, because that trade-off is real and worth weighing.
Beyond fertility, these are long-term conditions that change with your life — after pregnancy, on different treatment, and eventually with menopause, when symptoms typically settle. The useful relationship is an ongoing one with a doctor who knows your history, rather than starting the explanation over each time the pain gets bad enough to book.
Common questions
Is severe period pain normal?
Cramps are common; pain that stops your day every cycle is not something to endure. It can have a named cause and a treatment, and the only way to know is to be examined.
My ultrasound was normal — does that rule out endometriosis?
No. Ultrasound finds endometriomas and adenomyosis but can miss superficial endometriosis entirely. If your symptoms fit the pattern, say so — treatment is often based on symptoms.
What's the difference between endometriosis and adenomyosis?
Endometriosis grows outside the uterus; adenomyosis grows inside the uterine muscle. Adenomyosis more often causes heavy bleeding, endometriosis more often causes pain beyond the period. Many people have both.
Will I need surgery?
Often not. Most people start with pain management and hormonal suppression. Surgery is considered when medication isn't enough, an endometrioma is significant, or fertility is affected.
Can I still get pregnant?
Many women with endometriosis conceive, some without any assistance. If you have a diagnosis and want children, raise it early rather than waiting the standard twelve months.
Talk to someone, privately
Ium in Seocho supports international women with confidential, English-speaking care. Reach out with a message or a call — no pressure, no judgment.
Book a private consultationThis article is general information, not medical advice, and does not replace a consultation with a licensed doctor. Details of care and current guidance should be confirmed directly with the clinic.
