Symptoms
Which endometriosis symptoms mean I should go to the ER?
The short answer
Go to the ER for sudden, severe pelvic pain that differs from your usual pattern, or pain with fainting, fever, or repeated vomiting. Heavy bleeding, possible pregnancy with pain or bleeding, chest symptoms, or a painful, swollen leg also need emergency evaluation.
Medically reviewed by Dr. Steven Vasilev, MD
Quadruple board-certified in surgical and integrative therapies, Minimally-Invasive Robotic Endometriosis-Excision Surgeon, Director of Lotus Endometriosis Institute · Updated Oct 2026
Go to the ER for sudden, severe pelvic or abdominal pain that differs from your usual pattern, especially one-sided pain, or pain with fainting, fever or chills, repeated vomiting, or a rigid or swollen abdomen. These symptoms can signal ovarian torsion, a ruptured cyst, appendicitis, infection, or another acute abdominal problem rather than an endometriosis flare.
Seek emergency care for heavy bleeding, such as soaking through a pad about every hour, soaking pads or tampons rapidly, or passing large clots with dizziness or weakness. Pelvic pain or bleeding with a positive pregnancy test or any possibility of pregnancy also needs urgent evaluation because it may signal an ectopic pregnancy.
Chest pain, shortness of breath, or coughing up blood needs emergency care, including when symptoms cycle with your period. New flank pain with fever may indicate a kidney infection or urinary obstruction, and a painful, swollen leg may indicate a blood clot; these also need urgent evaluation rather than waiting out a presumed flare. The ER can assess for urgent causes, provide pain relief and other treatment as appropriate, and determine whether you need emergency surgery or hospital care.
For ongoing, nonurgent pelvic pain, you can contact our team for a consultation to explore whether endometriosis, adenomyosis, or an overlapping condition is contributing and how we might help you plan for lasting relief.
Where to go from here
Understand it, compare it with what you're feeling, then talk it through with us.
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Don’t wait out severe pain
If your pelvic or abdominal pain is sudden, different than usual, or comes with fainting, fever/chills, vomiting, a rigid belly, or heavy bleeding, get emergency care now. After you’re safe, our endometriosis and adenomyosis specialists can help identify the cause and build a plan to prevent future,
Questions people ask next
All symptoms questionsCan an endometrioma rupture?
Yes, an ovarian endometrioma can rupture, although it’s not the most common course. Its contents can spill into the pelvis and cause sudden, severe pain and irritation, which needs prompt evaluation because other urgent problems can feel similar.
What does an endometriosis flare feel like?
An endometriosis flare typically feels like a noticeable spike in pain, such as deep pelvic cramping, pressure or sharp, stabbing pains. It may also include bloating, low back or leg pain, painful bowel movements or urination, fatigue and nausea.
Should I see an endometriosis specialist for heavy bleeding?
An endometriosis specialist can help evaluate heavy bleeding, especially when it comes with pelvic pain, severe cramps, pain with sex, or bowel or bladder symptoms. This pattern raises the possibility of endometriosis or adenomyosis, which can overlap.
Can endometriosis be life-threatening?
Endometriosis is not typically life-threatening, but it can become medically serious when it affects organs. Rare complications include bowel obstruction or silent kidney damage, while chest involvement can be associated with a collapsed lung in a small subset of patients.
Further reading
What Else Could It Be? Ruling Out Other Causes
Explore essential insights on endometriosis and other causes of pelvic pain. Learn about differential diagnoses and effective treatment options.
When “Appendicitis” Is Endometriosis in Disguise
Right-sided pain that mimics appendicitis may be appendix endometriosis. Symptoms, why scans miss it, how it’s diagnosed, treatment options, and red flags.
Thoracic Endometriosis: Understanding Symptoms, Diagnosis, and Treatment Options
Chest pain or shortness of breath during your period? Thoracic Endometriosis Syndrome is a rare but serious condition often missed for years. Learn the signs.
