I have been trying to get pregnant and me and my partner had sex Jan.16th 2014. I still have yet to get my period, i took a test and it came out negative. When i went to the bathroom i noticed light pink blood when i wiped. I thought it was my period, cramps came after and they are severe. I go to the bathroom again and nothing was on my pad, my bad was dry, but when i wiped i was bleeding. Why is it only when i wipe, why isnt it coming out?