I'm i getting the stomach flu i can hold anything on my stomach and i vomit and has to go use the bathroom .help?

Gastroenteritis: Most common cause norovirus. Drink plenty of fluids, handwashing and good hygiene. If no resolution see a doctor.

Get some Immodium: , keep up with fluids and try generic zantac (ranitidine). If you are vomiting badly you may need to be seen for nausea medicine. You are assuming a virus but what about food poisoning or a stomach ulcer. If persistent then go in, good luck.