Help-Gallbladder Surgery

My symptoms started three years ago. I've had three, what I call attacks. Most recently, I went to the doctor and my liapase enzyme level was elevated so they did a sonogram. The results were that I have a polyp in my Gallbladder with what they described as sludge. Their recommendation is surgery. I've never really had the classic horrible pain. The only symptoms I've had are acid reflux and diarreah. When I eat it's as if my food doesn't digest and just sits in my stomach for hours and backs up into my throat. I have Mitral Valve Prolapse that requires that I take 1,300 mg. of Magnesium over the course of a day. I'm not sure if the magnesium is contriubting to the stomach issues. I've read posts where the person has the same symptoms and you recommend Nat Phos 6x plus Arnica 30c in a wet solution. I ordered them both last night, but thought I might have done so prematurely until I got your opinion.
I'm at my wits end and don't want to have surgery unless it's absolutely necessary.
Please help!