I had sex 6 weeks ago, two days after my last period. we used a condom and 4 days after i had sex i had heavy bleeding with clots and cramping for 3 days. i still havet got my period and i did a pregnancy test today which came out negative. i was wondering if i can rely on that or not. my breasts dont hurt, but they have gotten bigger and i have been bloated and had mood swings but these are all things that normally happen before my period. i have been very stressed because of this and other things lately and my periods has never been regular and i am also anemic. can that be why im late? or can it be that i am pregnant despite negative result?