I recently recovered from a stomach virus 2weeks ago but I'm still nauseous and haven't been able to eat & have diarrhea & extremely gasy. Wats wrong?

Probiotics! It's likely you're suffering from the after effects of altered bowel flora from your recent illness. Try a daily probiotic for a while and see if this helps.
Stomach virus. You may have gotten a second round of the virus. You also could have had your normal bacterial flora destroyed by the virus. Eating yogurt, probiotics, lactobacillus capsules all can help replace the normal flora. A few persons with the stomach flu will develop colitis from the the virus leading to prolonged pain, diarrhea. See your pcp or a gastroenterologist for testing if not improving.