Hi! Please don't get overly worked up, it's really straightforward (usually) and I personally found the pain very manageable.
I had only had a GA as a kid and was petrified of having one as an adult, but the anaesthetist will come round to see you early on to chat to you about what will happen, pain relief etc. It's dead easy once they get you down there, they chit chat and distract you, tell you what they're doing then it's like a shutter coming down!
Then you're waking up from what feels like the best, deepest sleep ever. You hear sounds first, then I just felt a kind of heavy pressure under my breastbone (my gallbladder had a huge stone in it, they had to break it up to pull it all out gallbladder and all). I wouldn't say it was pain, just hefty discomfort like someone was sitting on me. They'll ask if you feel sick, if you do they'll very swiftly give you a load more anti-emetic (you'll already have had some whilst under).
I took a while to wake up properly because I didn't get on too well with fentanyl (I'd declined any variety of morphine) - but otherwise I'd have been up and about within an hour.
I felt remarkably OK the same evening, and the next morning I took a couple of paracetamol - and that was it. I never took anything else, there really was very little "pain" although I suspect I was very fortunate.
As for the incisions, I'm fat too with rolls and I barely noticed them at all. You keep the surgical covers (can't think of the right word for them) on - including in the shower - for 5 days, then remove them, and that's it. They weren't sore, maybe a tiny bit itchy when healing. Dissolvable stitches.
Two things nobody warned me about:
- Bile diarrhoea. I ate soluble fibre for the first few days to go easy on the intestines, but by the time I came to poop things were quite uncomfortable. It was all a bit, erm, loose, but...OMG IT BURNS. 😊 It didn't last luckily.
- The weird electric sensations in your intestine as it gets used to bile being dripped in there constantly. It's really odd and freaked me out at first, but it went away - get the tingly sensation occasionally still. That might just be me though!
Good luck, I'm the biggest wimp in the world and I was OK.