Gas during pregnancy is very common ... People normally pass gas by burping or farting a dozen or so times a day. But when you're pregnant, you may find yourself doing that much more often.
Why Premenstrual Gas Smells Farts are a "healthy ... 12692 American College of Obstetricians and Gynecologists. Changes during pregnancy. Gomes CF, Sousa M, Lourenço I, et al.