I had plenty of regrets while still in the hospital - no surprise as I was weak, in pain, and absolutely HATE hospitals - but thanks to this board knew that that was quite normal so kept telling myself that the feeling would pass soon (which it has, despite the other issues that have since cropped up - all normal issues but still issues that have to be dealt with). My roommate, who had undergone gastric bypass, was in worse shape than me and so clearly regretting it so I was able to reassure her as well that it was a normal part of the process. Just tell yourself that you're undergoing the worst part of the whole surgery now, that it WILL get better, and just focus on yourself and your health.