Ive Been Throwing Up Alot In The Last 24 Hours.

ive been throwing up alot in the last 24 hours. it gets worse when i even try to lay down. every smell bothers me. i cant eat. i havent had a period since mid to end november, but took a pregnancy test on 1-2-17 and it was negative. im not constipated, normal bowel movements. why am i so ill?