My diagnosis was either ulcers or gallstones. I didn't fit the typical age or gender for gallstones, but they checked anyways. The diagnosis was confirmed with an ultrasound. Even in the middle of nowhere there's likely a clinic that can examine your gallbladder via ultrasound if they have someone that knows what they're looking for, otherwise perhaps it could be sent off to a hospital or doctor in a nearby city without requiring you to travel.