My last period ended on July 2nd, I had unprotected sex that night and every night up until this Saturday, so July 9th. We aren't trying to get pregnant but he didn't pull out any of the times. Yesterday I went to go use the washroom and noticed there was light red almost pinkish blood on my underwear, and later it was more brown. It got heavier last night and this morning there was a clot and it's very red and pretty heavy for what implantation bleeding is said to be. Does anyone know what this is? If I could be pregnant? My periods are always consistent so this isn't my period coming 3 weeks early