[ann arbor]

So I am just wondering what it could be. I Started my first "period" at age 11. Stopped when I was 12. Never told my mother I had no period till I turned 15.
They took me to the doctors and they had done some test on me. Told me that my uterus looked normal and such. So they put me on birth control. It was free so I was on birth control from 16-18. Now I am 19 and had have no period since I was off the birth control, which has been a year. I have no health insurance or anything so I can't just go to the doctors...
Two of my sisters have PCOS. Though I am not sure what is wrong with me. Or if I am even fertile. So, I take a pregnancy test every 3 months. Though it freak m out. :[
Any idea. Maybe recommend a health insurance plan?