My bf and I had unprotected sex on my most fertile day, he pulled out but we continued to have sex minutes later. 7 days before my period I began bleeding with no clots, it was so light I wore a panty liner for the 3 and a half days it lasted. I am normally 7 days and very heavy with lots of clotting and cramping, the cramping this time didn't even last a day and a half and was no where near as bad as it usually is. I also felt almost like a popping or spasm sensation in my uterus which I have never felt before. I am currently 2 days away from my expected period I am very moody and emotional but my beasts are not tender and I do not feel like my period is coming. What are my chances of pregnancy? I used a first response pregnancy test this afternoon and it said negative, is it to early? My beasts seem very veiny today and my nipple seem considerably larger then normal. What is going on with my body?