I have the same problem with weight since I’ve had my gallbladder removed. I wasnt sure if it was something else or the removal. I have diarehea constantly and I keep thinking how can I gain weight when I am constantly crapping everything out that I eat. I swear I can eat something and 5 minutes later its coming out the other end. The only thing I have found to work for me was when I was taking pain medication for my back, they said it would constipate me but it basically made me regular. I have no energy as well. I keep thinking I’m getting fatter because I have no energy to do anything. Probably because all my energy is flushed down the toilet. Anyways sorry I dont have any answers for you but I can tell you I know where you are coming from and hopefully someone can give us some answers.