Hi im 17 years old and i like just lost my virignity..okay so three weeks ago i had unprotected sex with my boyfriend three or four times..And then three days later i started my period..

Well a week later when i had just ended my period we had unprotected sex again..

Now im worried i might be pregnat. The last few days my breasts have been enlarged and tender, im having cramps, and im having lower back pain..And my period isnt for another week and a half..So is it possible i may be pregnant?

Even though is wanst during that "ovulating" time..i HAVE read stories of women who have gotten pregnant when they were on their period..and i had sex right before and after mine..

I realize that cramps and back pain are normal PMS symptoms but i dont get symptoms this early before my period..

HELP!