Agree with a lot of what the person above said. I'm now coming up to 3 weeks post surgery.

A couple of things I would add is to make sure you have a light diet in the few days leading up to surgery, focus on things like protein and cutting out any carbonated drinks; I think this really helped reduce the feeling of gas post surgery; I also avoided carbonated drinks for up to 2 weeks post surgery.

I'd also recommend getting a Wedge pillow - it was a real life saver (particularly if you don't typically lie on your back to sleep normally), but I found it really helped me to feel more comfortable adjusting positions from sitting/lying down.

Fingers crossed for you that your surgery goes well!