Bleeding after sex

Joy • My name is joy, currently pregnant with baby number one
Okay so I just had my period for 18 days, and have been off of it for almost 3 days now and me and my husband had sex this morning and when we finished and noticed there was blood on his dick and when I went to the bathroom and when I wiped there was a little bit of blood, today was also my ovulation day , why would I be bleeding...?