I was in the same boat with being apprehensive. I think that's natural. I debated for years about the surgery before I was just too fed up with being overweight. My insurance required 6 months of classes, specialist appointments, nutritionist appts, weight loss, support group meetings, and crazy amounts of blood work before I could even submit to insurance. Luckily I got cleared but the whole process ended up taking 8 months from start to surgery day.
So far, the worst part of the entire process was the classes because the instructor seemed to talk about the worst case scenarios as if they will most definitely happen to ever person in the room. Most of it was to scare away the people who weren't serious about the life change. So I didn't really pay much attention to it other than the important stuff.
I'm 9 days out of sleeve surgery and since the starting day of the process I'm down nearly 20lbs If you've made it as far as you have- stick with it. It'll be worth it. The statistics of complications are super low if you're going to a credible surgeon. Most people won't have any complications.
