Severe cramping comes and goes for 24 hours now. After the cramping I throw up. First, it was dry heaves, changed to food I had recently eaten, and for the past 15 hours it s been a smelly dark liquid. Since about midnight I ve thrown up about 3/4 gallon of dark, smelly blackish liquid. I go from a slight fever to being clammy and cold. I just threw up about 1 pint+ of liquid after the severe cramping and am feeling a bit better at the moment. Better than I have felt for the past 20 hours or so. Today is 3:30 AM on Sunday. I did not eat yesterday, Saturday, I ate cheese fries out on Friday at 5PM, I had a cheeseburger at noon noon on Friday (both those meals were at a restaurant, and in the am I had a Cheese and Egg bagel (Mc Donald s) on Friday.