My husband is having sharp pain on the lower right abdomen, gas, nausea, and has vomited once. The pain did not start in the center of his stomach near the belly button and move to the right as I have heard appendicitis usually does. I had a very bad stomach virus for 3 days last week so I would think it's a virus or extremely painful gas, however, it's on the right side. Should we just give it time and wait and see, or be concerned that it could be appendicitis and go to an er.?