Drunk Sex

Hey, so Saturday night an ex of mine && I got drunk && we had sex well this morning(Monday) I woke up && went to pee && I had a weird bloody discharge that was in my underwear && when I wiped but it was just then it hasn't happened again . I'm not suppose to start my period for another 2 weeks, I don't know if it's from missing my depo shot or what it just kinda freaked me out . I've never had anything like that happen after sex . I just want someone's opinion or advice or just to know it's happened to someone else .