Hello, I m an 18 year old female. I haven t had a period in 10 months and I ve always had problems with my period. A couple of weeks ago my boyfriend and I tried to have sex we used a condom but I wasn t ready to have sex. He only put the tip in with a condom on it hurt so he pulled out he took the condom off and thre it away. A couple weeks later I started to have some cramps like a period then I looked in my underware and noticed blood so I used I tampon then for the next three and a half days I was on and off bleeding. Should I be concerned for a chance of pregnancy I am a virgin and that s the first time I ve tried anything. Or did he some how start my period after 10 months of not having one.