Does gas cause nausea. have a bulge below my belly button. lower abdomen is bloated too. assuming its trapped gas but im getting a lot of nausea?

Your pretense is that you have gas, which needs a doctor's evaluation. Excess gas in the intestine can cause nausea. See a doctor in person. This forum is not designed to answer personal health concerns

It is not feasible to provide a meaningful opinion without additional history, physical examination and may be some tests. It may not be gas, if your symptoms have persisted for more than a couple of days, it would be prudent to see a doctor. Wish you good health!