Spotting after sex

Ciara
So I know it's totally normal to sometimes have spotting after sex, but I'm curious.
Had pretty rough sex last night around 10 (could definitely feel my bf hitting my cervix harder than usual a few times). Went to bed and woke up fine, then noticed some spotting when going to the bathroom after being up & walking around about 2 hours.
Just wondering, how long does this kind of spotting tend to last??