I Have Been Having Issues With Vomiting And Diarrhea, Indigestion,

I have been having issues with vomiting and diarrhea, indigestion, gas and bloating. Two weeks ago from today and then again today, started violently throwing up for over an hour each time, with diarrhea, with bright yellow mucus then dry heaves. ?? My back has also been hurting me. Although I feel somewhat better now, my stomach still doesn't feel great. Havent eaten much at all today