Imonopoli,
Just because your doc isn't finding gallstones DOES NOT MEAN you don't have something wrong w/ your gallbladder. Many many people on these boards have had their gallbladders removed and have not had ANY stones at all. Instead, their gallbladders weren't functioning properly. Please ask your doc for a hida scan. If your gallbladder isn't functioning this may be the cause of your problems and this test will be able to tell you that or at least rule out gallbladder problems all together. Good luck!