Brown Discharge & Some Blood?

So april 17th was my most fertile day, and i had sex. but yesterday and today every once in a while when i wipe, theres been some dark brown, watery discharge. Im expected to ovulate today (april 18th) so of course im not on my period. A couple hours went by since i last had sex and i went pee just now and when i sat on the toilet, some blood came out of me and poured into the toilet. Not too much but definitely seemed like more than what it should have been for me not being on my period? But it didnt seem like period blood it was SUPER water and more pink than red. Anyone ever have this??? What is it??? I have some light cramps in the front of my vagina which is not normal for me bc my period cramps are brutally painful.