i had unprotected sex 3 months ago. i took the morning after pill 48 hours later. i have had what seems like a period for the last 3mths. but for the past two weeks i have put on a huge amount of weight which looks like a pregnant belly, been sick, diarreah, dizziness, light headed. i have also been having funny feelings inside, like flutters. i took a pregnancy test yesterday and it was negative. is there chance i am pregnant? i really feel like i am. i would really appreciate any advice. thanks