These are less intrusive and provide less dangers. Both forms of surgery are often performed while under general anesthesia. This implies that you will be unconscious and will not experience any discomfort during the procedure. After surgery, the stomach needs to heal back together so nutrition can be re-established into the digestive system. The body is very efficient at healing itself if you follow post-op instructions carefully, you should have no problems with pain or infection. If you do encounter any problems after surgery, call your doctor immediately.