Gas is very normal during pregnancy. For one reason, the bacteria in the intestines are going crazy with your new and improved blood supply. These little buggers feed on the rest of your food as it passes along and make vitamins and air. So now that there are more of them to go around, they make lots of air. You may also have a bad case of the burps. With all the extra hormones causing you nausea and vomiting, it is not surprise you are taking in more air in your tummy as well. Most pregnant women suffer from bloating and increased gas in the belly at some point during pregnancy. Gas can cause abdominal pain or discomfort.