I think that the pain is coming from your port. I have the same deal going on but the pain is getting better. Sometimes when I move quickly or oddly I will get a sharp pain as well but I think it's normal. I've lost 17 pounds and had my surgery on February 4th. However, 13 of that was pre-op. I'm going to be patient because I think the body is traumatized and needs to adjust. Then the weight will come falling off.