..what changes after.surgery..i currently take ambien to sleep.

Nothing for me. I take Benadryl to sleep...I took it before surgery and I still take it now. I don't feel like I sleep any better now than I did before although I didn't have any sleep apnea or conditions that contributed to making sleep more difficult.

I think I'm sleeping a little better now, either that's from loosing enough weight that my apnea is getting better or simply because I'm so tired

I sleep better now since surgery then I have in a long time. I contribute it to no caffeine, sugars, or processed foods. I use to wake up several times a night. Now, I sleep through the night with no problems.