Murgir, just wanted to wish u luck for the scopes and let you know I'm thinking of you. You are dealing with such a lot right now and I'll be hoping that everything goes well and that your docs can sort some treatment that helps you feel a lot better than you do now.
I had a lot of gastric issues on neurontin - it made me very sick and caused lots of pain in my GI. I came off it and was a lot better very quickly. My pain doc said it was nasty stuff and it wasn't uncommon to have GI problems on it. She said they always try it because if you tolerate it, it can often be quite effective. From what I've read since, if you have the GI issues, it's maybe not being absorbed very well anyway. I'm on low dose lyrica now, and before this flare it was doing a pretty good job cosidering...
Take care of yourself, and remember that you're never alone because we are here thinking of you and wishing you well
Bram.