so i read somewhere that sometimes sperm can get to the fallopian tube in about 30 mins. well 4/12 around 1-2am we BD'ed. maybe an hour later i had the worst stomach pain ever and tossed and turned all night. this has never happened before. the rest of that day and the next couple days following i was nauseous, stomach cramps, and dizzy. AF isnt due until May 1st. My last period was 4/2. Is there anyway I could have ovulated early? has anyone had this or something similar happen before?!