hey, i had unprotected sexual intercourse yesterday and today i feel like vomitting out of a sudden and my head aches sometimes. i get discharge also, is this normal or..?my period ended two days ago. i was thinking it was indigestion cause i had a very light meal at around 9pm but now it's already 2.36 in the morning and im still full. i dont want to think im preggers cause i once went through that only to be disappointed in the end.