Hey doc , so for the most ive always had a patterned period , always around the same timing , never did i experience bad syptoms to my periods ... i recently became sexually active again it had been a year since my previous relationship.... now my period has changed it comes delayed. I was once again delayed... ive been having sex but this time i recieved my period at 1 a.m , i was extremly cold , and hot , i was throwing up several times i fell asleep finally with trying to hard around 3 a.m , now today my period seems as if i hardly have it .... no blood is really being released , its some what light , & i dont have clots of blood coming out like usual , my period for me is heavy ill be bleeding now im not , what could this be.