Hi I'm 17yrs old. My boyfriend and I had sex and I was afraid that I was pregnant. I had no symptons. But then I think I got my period. I had horrible cramping, and bled heavy at furst then lighter the last days. It was like a normal period. But now in concerned because there is only 2 days left in this month and I still haven't gotten my period or any pms symptons. Could I be pregnant?

Of course - any time you have sex, protected or unprotected, you run the risk of getting pregnant.

Are you saying you had sex, got your period, did not have sex, did not get your period and wonder if you are pregnant?

Or did you have sex one time, got your period and didn't get the next period?

I'll skip the lecture about a person who cares for you protecting you against pregnancy when you're 17 - and possibly underage, depending on your State/Country.