Y is it for the past 3 days I keep throwing up and pooping when I eat

Every time I eat my stomach gets upset and I throw up and have loose stole what may be the problem

Stomach virus is the most common. It goes away in 3 more days if you STOP EATING, and just drink clear liquids like watered down broth.

After that, there are various conditions you can have, but I won't go into details. Ulcers, gall stones, parasites, obstructions, strangulated hernias - all sorts of things. If you get worse when you stop eating instead of starting to feel better by the 2nd day, go to an ER.