Last month I had my period on the 26the -1st

And it was heavy after that I started having sex all month so on the 27th around 7pm I start my period so today it had stoped, so I had sex with my husband then we notice blood we didn't care he cum inside of me then we went to go take shower, after 20mintues I felt cramps then my period came back up, my boobs are hurting me so bad my head hurts I even get cramps they came and go I have very bad pain in my lower back