Hi guys! So here's the deal! I went to go see my boyfriend around ovulation time (was using another app before I got this one and it calculated my ovulation dates wrong) so about a week and a half ago my "period" came but a two days early..only it wasn't like a normal period..my whole life my cycle has been extremely heavy and painful with cramps. However this time it was just a couple spots a day and never filled up a tampon...I took a test two days ago and it sai negative but now my back has been hurting I've gotten headaches I'm constipated at times and I'm extremely neausous I sometimes want to eat like a cow and other times I want to throw up my food  ...what do you guys think? HELPPPPP