I have horrible cramps when my period comes. To the point that any medication hardly helps, I almost throw up, can't walk, and can hardly speak.. I also get bad backaches during my period and have experienced weird digestive problems when menstrusting. My periods are irregular yet, usually every 6 weeks but sometimes I can go months without getting it. I am 18, first period was age 14. I am sexually active, and I am going to start birth control (nortrel) soon. I went to get a physical and they did not do a pelvic exam/PAP because I am not 21.. Can I still get checked for endo? I'm worried.