Foxxy,
Reconsider your friends. Instead of talking behind your back they should have asked if you needed to talk or offered support with these other problems you are dealing with.
I have a heavy load without the surgery as well. In fact several times during the 6 month insurance required diet I almost decided to back out because of these other problems. But my insurance required pyschiatrist - who is a gem! - talked me out of it. This was something I had to do for myself when the rest of my life was out of my control.
I was really really down immediately after the surgery. Thought I'd made the biggest mistake of my life. It took me more than a week or so to be at least human again. But then, I'm a life time anti-depressant user, so that underpinning helped.
Do not set yourself a time limit to stop taking the meds. Maybe you'll be ready to go off in 3 months, maybe not. You need to find someone to talk to, a spiritual leader, a counsellor, a psychologist, .... to help with the other issues in your life as well as the changes as a result of surgery. There is NO shame in it. You are helping yourself to wellness, physical as well as mental, it's the WHOLE you. If you can find someone who deals with eating disorders, or compulsive eating, it would be ideal, but I have no idea how many of them exist. I am lucky to have found the only one in my area. She is helping with all my issues, not just eating.
You are normal. Take care of yourself!