Had unprotected sex a day after my last period. I am now 3 days late and started cramping and went to the bathroom and blood clots came out (definitely not in my urine , i checked). That usually happens during my periods however this time there is no bleeding on my pad, only happens when I go to the bathroom, but a lot at once. I thought maybe it was implantation bleeding but I took a pregnancy test twice and both times came up negative. Not sure why my bleeding is like this because usually my periods are heavy. I was working long hours and in the past month am no longer working so I thought maybe it was just my body adjusting, however, i am unsure.