I didn't have gallstones, but I had a severe case of endometriosis and ovarian cysts, and I hated the thought of surgery, but I feel a TON better. I just had my surgery last tues, and the pain is totally gone.
The worst part of all of it was the gas pains that occured, because when they go in laporoscopically, they put air in your abdominal cavity to give them room to work, and sometimes that takes a little time to get out of your body. If anything, it has made me feel better, and has pushed me to get myself healthier.
I also got a call from my doc today and she's testing me for a gluten allergy, because of stomach pain I've been having. You might want to check into that, because the pains I'm having sound similar to yours.
Hope all goes well, and although surgery is scary, sometimes it's the only thing to help make you better