Hi there... I had my surgery on the 9th as well so we are six days in! I, like you, was thinking on my gosh what have I done! I have been feeling like I am more of a slave to food now than ever! My stomach was constantly feeling like it's hungry...I did realize that the painkillers (Tylenol with Codeine) really exacerbated that so I stopped taking those, now feeling much better. I also realized that because I hadn't been taking my anti-anxiety meds (couldn't swallow them crushed, kept throwing them up) I was suffering from withdrawal which included nausea, lightheadedness and insomnia. Are you still taking all medications that you were on previously?
I do feel that pain In my shoulders like gas or something as well. Hopefully that passes soon, I know how you're feeling. Nice to know I'm not alone