I've been passing such funny gas since the end of July this year, after an operation in the shoulder that required general anesthesia and intubation. This occus 3 or 4 times a week, sometimes all on the same day. I hear passing stones can be very painful and may even require hospitalizarion. We're supposed to go to the beach for 1 week, leaving Nov 13. Should we postpone, just in case this could turn serious? To make the joke funnier, in the hospital for my shoulder, I caught the MRSA superbug. Lucky me! I'm OK now, thanks!
Anatomically speaking, your bladder shouldn't be connected to your gallbladder such that bladder/kidney stones are different from gallbladder stones. The latter become symptomatic after a fatty meal. The former cause tremendous pain, and possibly blood urine, whenever they (attempt to) move down the ureter (tube from kidney to bladder).
I'm not clear as to the rest of your questions. I'm not familiar with bladder/kidney stones causing farting from the urethra. I can't explain why you might still have gas left over from your surgery 3-4 months ago. So is the "funny gas" from your urethra or anus? Perhaps you have an unusual infection in your bladder that's causing gas to develop (think of fermentation for beer & champagne). Yeast, perhaps?
As for your vacation, do you know that you have stones? And if so, which ones? Like I said above, you can sometimes minimize gallbladder stones from bothering you by avoiding fatty foods. But it's much more difficult to avoid kidney stone attacks. Best to flush those buggers out w/plenty of water, then recuperate on the beach.
I'd suggest going to see your family doc for a thorough evaluation. Good luck!
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