tmi or trigger warning

So I'm 8 weeks prego my so and I haven't had sex since the conception date which was October 1st well tonight we decided to have sex well after we were done we noticed blood. I'm just really nervous that i fucked up this chance to have a full pregnancy ( had 2 miscarriages in the last year) I'm really scared... there was just blood I haven't had any cramping so far..