I have been nauseous for the past two days, I started throwing up excessively 2 nights ago I and I'm really nauseous still I cant seem to keep my food down and feel the urge to vomit but now I really don't have much left and it hurts and now I'm throwing

Nausea & Vomitting. Those symptoms are worrisome, particularly after two days and if you're not keeping down any food or liquid. This can lead to dehydration which can be very serious, even after only a couple of days. You should go to an emergency center for evaluation and possible IV fluids. Possibilities include stomach flu, pregnancy, food poisoning, appendicitis, gallstones, stomach ulcer, gastroparesis, etc.