Can WLS cause Kidney problems?

I've been having some bad backaches which is'nt like me. Anyway Saturday I got one and took a couple of codienes (on an empty stomach of all the stupid things to do). My back pain got tremendously worse... like every nerve was on fire and my pouch hurt so bad it was like it ate a hole through it. Actually I hurt from my chest down and all around my stomach and back. I tried to throw the pills up, but they had evidently passed through. I was in one of the worst pain I've been in in my life, and I've had alot of pain in the past. I thought for sure I was going to pass out. And I hurt so bad I almost could'nt talk. This lasted three hours. Then I was fine for about the next 36 hours. Then sometime in the very early hours of Monday morning I tried to roll over and my back (lower to mid right side) again felt as if it was busted. So yesterday I went to the doctors. Well, the nurse came in and said I may be dehydrated and wanted me to give a urine sample. Well I never saw my urine that color! It was a dark brown and seemed to have some white things floating around. (However the white could have been what they wanted me to wipe with). Anywho they checked and there was no blood and something else in there ether (forgot what it was). But they are sending it out to a lab so it will be a few days before I know. The doc asked if the pain was relieved by changing position or if I wanted to move alot. I said MOVE! I tried every position you could think of to stop the pain and it would'nt. So based on that she does'nt think it's a back problem (muscles) but rather a kidney infection or stones. I'm floored. I had no idea that something like that could cause back pains. And I have no idea if WLS could cause kidney stones or an infection. I've had urinary reconstructive surgeries almost 10 years ago, and rather suspect that is the cause... unless there are stones in the Kidneys. Perhaps rapid weight loss can not only cause gallbladder problems (mine was removed post op) but kidney as well? Anyway, has anyone had kidney problems post op??? By the way, I drink lots of diet W Ginger Ale so I certainly get enough fluid. Also I've had to take Furosemide (40 mg) everyday since 1993 because of the botched surgeries back then. (I put on 3 pounds today as I missed yesterday's fluid pill). And this also lowers potassium (which regulates fluid retension?). I've had lots of potassium problems as a new post op last year. So I'm just wondering if the WLS caused or made anything worse and what I can do about it? (Drink water for one thing). I had a doctor bitch at me last year as all I was drinking was WATER. (No pop or anything else). So I gave up and went back to drinking what I like... seeing water is bad if that is all you drink. Can't win. Thanks.

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