Why do i feel like i have gas in my lower abdomen?

Maybe you do!: Maybe you don't. We don't have enough information to give you decent guidance. Ask again and tell us how long you have been having fullness, bloating or pain and if it is constant. Also add if you have other symptoms, like fever, diarrhea, constipation. Keep your answer brief but complete. Include your medications, including supplements, and medical conditions in your profile first, too.