I had quite rough sex the other day and it was all going great until we realised there was blood on his penis and leg clearly from me. we brushed it off and thought it was my period but it wasn't my period. 2 days after I happened to wipe after I went to the toilet and noticed that there may be some internal swelling and the outside looked fine with no swelling. just wondering if it was due from friction as we didn't use a condom ? there is no unusual discharge or itchy-ness or pain.