My last period started on Dec. 1 and ended on the Dec. 5th last year. 2 weeks before that, may boyfriend and i had unprotected sex but we've done the withdrawal method. And now i am 9 days late for my period. I tried two pregnancy tests but resulted to negative. I really dont know if im pregnant or what. And i guess 1 week after my period ended last year, i ate too much and felt like my stomach suddenly bloated. Then now, I feel cramps. Can i get your opinion about this? Thank you