Stomach problems and Actonel

Recently I fractured My T12 vertebrae, and have been off work for 4 weeks and wearing a back brace. I started taking the Actenol one a week that my Dr. had given me awhile back. For the past couple of weeks I've had allot of problems with my stomach including the gnawing and indigestion, and getting full after I eat a small amount. I don't know if this is from the Actenol or not. I've been on pain medication as well because without it right now I wouldn't be able to walk. Should I go to my family Dr. about the Actenol and see what he says?