spotting

Casey

I am 3dpo. DH and I BD 2 days ago and yesterday. today I had weak aching on the right side and assumed it was ovulation pain. this evening i have spotting, light pink with a small dark red clot. what is this?? I've never had ovulation bleeding before. sufferes an early miscarriage in March, everything passed during regular cycle in April. had a vaginal ultrasound 1 week ago as a routine check up (my mom passed from uterine and ovarian cancer). everything was clear and healthy. idk what to make of this spotting.