My last period was in November. I’m 15. I’m not sexually active and I’ve had my period for like 3 years and I’ve always been regular. I’ve told my doctors, and I know I have many health issues going on but I can’t help to think it’s odd. I mean, I know I’m not pregnant. I have a girlfriend. My doctors have done several pregnancy tests, spite of me telling them I can’t possibly be pregnant. I think it could be stress.. does this ever happen to anyone else?