I've had horrible menstrual cramps on the first day of my period since I was about 15. I was on the pill to treat them for a while in my teens/early twenties. I still have them at age 35. They're not as bad as when I was a teen (so bad that I could not go to school and could barely move.. I sobbed the whole day). But, I still have them. Is this normal? Or, does it sound like Endometriosis?

Thank you!!