The bloating and constipation that you are experiencing are probably from the medication, but the pain and gas are from the Crohn's. Don't become discouraged! The doctor knows what he's doing. Keep on the meds until they do their job. The alternative is surgery you know. They have recently come out with some marvelous medications to deal with Crohn's, so don't dispair. Look on the Internet for information about Crohn's. You can join a chat so you won't feel all alone. You WILL feel better soon! Keep the faith.