Endometriosis takes an average of 7–10 years to diagnose. This checker turns what you already know about your own body into an evidence-based estimate you can bring to an appointment. It takes about three minutes.
Private — everything is calculated on your device. Nothing is sent, saved or tracked.Your symptoms
Move each slider to match how bad it usually gets. Leave it at zero if it doesn't apply to you. There are no wrong answers — an honest 4 is more useful than a cautious 8.
Do your symptoms follow your cycle?
This is the most important question here. Pain that reliably tracks your period points to endometriosis far more strongly than the same pain occurring at random.
Your history
Tick everything that is true. Skip anything you're unsure about — leaving it unticked is treated as "unknown", not as "no".
Less common, but important
These are uncommon — most people tick none. But each one is highly specific to endometriosis, so if any apply they matter a great deal.
Test results — optional
Only if you happen to have them. Skip this whole section otherwise — the checker works fine without it.
Estrogen (estradiol) and your cycle optional
Pregnancy raises estradiol enormously, so if you answer Yes or Not sure we leave estradiol out of the calculation entirely.
Estradiol is only meaningful relative to where you are in your cycle.
CA-125 and HE4 optional
Often raised in endometriosis, but also in fibroids, infection, pregnancy and ovarian conditions — it is supportive, never diagnostic.
HE4 does not raise the endometriosis estimate — it barely differs between endometriosis and healthy controls. We use it only as a safety check.
Your age optional — used for context only
Age does not change the probability. It only tells us which stage of endometriosis is most commonly found at surgery in your age group.
If you have severe sudden pelvic pain, heavy bleeding, fainting, fever, or pain with vomiting, seek urgent medical care now — do not wait for an appointment.
References & Sources
Bulletti, C., Coccia, M. E., Battistoni, S., & Borini, A. (2010). Endometriosis and infertility. Journal of Assisted Reproduction and Genetics, 27(8), 441–447. https://doi.org/10.1007/s10815-010-9436-1
Grandi, G., Ferrari, S., Xholli, A., Cannoletta, M., Palma, F., Romani, C., Volpe, A., & Cagnacci, A. (2012). Prevalence of menstrual pain in young women: What is dysmenorrhea?
Journal of Pain Research, 5, 169–174. https://doi.org/10.2147/JPR.S30602
Huhtinen, K., Suvitie, P., Hiissa, J., Junnila, J., Huvila, J., Kujari, H., Setälä, M., Härkki, P., Jalkanen, J., Fraser, J., Mäkinen, J., Auranen, A., Poutanen, M., & Perheentupa, A. (2009). Serum HE4 concentration differentiates malignant ovarian tumours from ovarian endometriotic cysts. British Journal of Cancer, 100(8), 1315–1319. https://doi.org/10.1038/sj.bjc.6605011
Laumann, E. O., Paik, A., & Rosen, R. C. (1999). Sexual dysfunction in the United States: Prevalence and predictors. JAMA, 281(6), 537–544.
https://doi.org/10.1001/jama.281.6.537
Moen, M. H., & Magnus, P. (1993). The familial risk of endometriosis. Acta Obstetricia et Gynecologica Scandinavica, 72(7), 560–564. https://doi.org/10.3109/00016349309058164
Nnoaham, K. E., Hummelshoj, L., Kennedy, S. H., Jenkinson, C., Zondervan, K. T., & the World Endometriosis Research Foundation Women’s Health Symptom Survey Consortium. (2012). Developing symptom-based predictive models of endometriosis as a clinical screening tool: Results from a multicenter study. Fertility and Sterility, 98(3), 692–701.e5. https://doi.org/10.1016/j.fertnstert.2012.04.022
Nnoaham, K. E., Hummelshoj, L., Webster, P., d’Hooghe, T., de Cicco Nardone, F., de Cicco Nardone, C., Jenkinson, C., Kennedy, S. H., Zondervan, K. T., & the World Endometriosis Research Foundation Global Study of Women’s Health Consortium. (2011). Impact of endometriosis on quality of life and work productivity: A multicenter study across ten countries. Fertility and Sterility, 96(2), 366–373.e8. https://doi.org/10.1016/j.fertnstert.2011.05.090
Nugent, C. N., & Chandra, A. (2024). Infertility and impaired fecundity in women and men in the United States, 2015–2019. National Health Statistics Reports, (202), 1–19. https://doi.org/10.15620/cdc/147886
Ozawa, Y., Murakami, T., Terada, Y., Yaegashi, N., Okamura, K., Kuriyama, S., & Tsuji, I. (2006). Management of the pain associated with endometriosis:
An update of the painful problems. Tohoku Journal of Experimental Medicine, 210(3), 175–188. Ragab, A., Shams, M., Badawy, A., & Alsammani, M. A. (2015).
Prevalence of endometriosis among adolescent school girls with severe dysmenorrhea: A cross-sectional prospective study. International Journal of Health Sciences, 9(3), 273–281.
World Health Organization. (2025, October 15). Endometriosis. https://www.who.int/news-room/fact-sheets/detail/endometriosis
Pankaj Singhal, MD, MS, MHCM, FACOG
Master Surgeon at NYGSE
Dr. Singhal has performed more than 10,000 robotic and laparoscopic procedures and is recognized as one of the country’s highest-volume robotic gynecologic surgeons. His expertise spans complex endometriosis and gynecologic oncology, allowing him to manage some of the most challenging surgical cases with exceptional precision.
Known for taking on cases that are often referred out by other centers, Dr. Singhal combines advanced surgical technique with a thoughtful, patient-centered approach focused on long-term outcomes and quality of life.