Cravings???

Karly
I just got this weird craving for buttered popcorn and Taco Bell... I also just ate a big dinner not too long ago and my tummy is already growling. I haven't had many "period cramps" and I'm supposed to start either today or yesterday. But took a pregnancy test two days ago and it said negative. I get random hot flashes and have occasional heartburn and nausea but no vomiting.