Bleeding after Sex

So the past couple times I have had sex (which have been very recently) I have been bleeding some afterwards. Not like an alarming amount but a little bit for a few hours after then it stop. Should I be concerned orrrrr? I haven’t had sex in a while before these past couple times recently and I wasn’t a virgin the first time this happened either. So I just wanna know if it’s common or if I should be worried?