First of, I have a disease called Polycysistic Ovarian Syndrome so I have very irrregular menstrual cycles.. I had unpretected sex over a month a go, a few days in a row.. For the past 48 hours I've been having intense lower back pain, bad cramps in my lower stomach ( mainly on the left side, going down to my hip). And i've been bleeding (vaginal) very bad. Like I've had to change a super plus tampon every 15 to 20 minutes.. otherwise blood will be everywhere.. What is happening???