Bleeding after intercourse


Okay ladies I am a little worried. DH counts were so low last time that RE told us we had to wait two months before we could do our 3rd IUI to let his counts go back up. She did tell us that we can try naturally. Well I am not doing the OPK and we are just BDing around the time I know ovulation occurs. We had intercourse sat (CD11) and last night (CD 13) and each time after intercourse I have had blood when i went to the bathroom afterwards. Has anyone else had this happen. What could this mean. Should I call RE?