My last perios was on Oct 30 & finished around Nov 5-8* . I have cramps & everything but nothing of nothing comes out. I don't know the proccess of how my period comes (ovulation,fertil,etc..) I did have sex on my period. I tooktwo pregnancy test & both came out negative, but inside me I feel that I did it wrong & it didn't appear in the instructions. I do have tender breast & headakes & sometimes I feel a little dizzy. Can I be pregnant or what is going on with my period, or my body in general?