I have been on my period for 11 days now, and I have a family history of tumors growing on the uterus. I am 19 years old and have not missed a period, I am on birth control and have a doctors appointment on Monday. The first 2 days I had extremely bad cramps, I threw up 3 times and could not keep any food down. I am worried about what could be wrong. So my question is what could cause this?

