What Causes Diarrhea And Brown Vaginal Discharge After Having Sex?

Hi I need help ,I am confuser and don t know what to do or who to turn to ,I am 24 years ago ,just married and trying to have a family, my husband ejaculated in me 2 weeks before my period started,which I was my ovulation days, he ejaculated in me 5 times each day, on Sunday that just passed I was suppose to start,but didn t so he ejaculated in ne that day,I started Monday, but I don t pee blood jst when I wipe myself,and its kind of brown,and diarreah but I have lots of cramps and feel bloated, can I be on my last period