Gallbladder inflammation which causes the fever is called Cholecystitis.
The symptoms are severe pain in the upper right abdomen, accompanied by fever, nausea, and sometimes vomiting. The abdomen may be rigid and is usually tender to pressure at, or below, the lower edge of the ribs on the right side.
It is caused when the gallbladder becomes inflamed.
An acute infection of the gallbladder may be just like having a blocked nose with a cold where the gallbladder or ducts become congested with catarrh. Recovery may take just a few days. But, in some cases the gallbladder fills with pus. Be very careful, and immediately treat this condition.
The infection can occur for several reason but bacteria in the bile are able to invade the wall of the gallbladder and cause inflammation.
Inflammation of the bile ducts ( Cholangitis ) produces similar symptoms (plus jaundice) to inflammation of the gallbladder, but the symptoms and treatment is the same.
Take nothing but water for 2-3 days until the acute condition is past. Then drink juices for several more days. Pear juice, apple juice and beet juice are very helpful.
Gradually add solid food, such as shredded raw beets with 2 tbsp. olive oil, fresh lemon juice, and freshly blended, uncooked applesauce. Pears should be eaten generously because they are very healing to the gallbladder. Oil is necessary in the diet, to stimulate the production and elimination of gall and the fat-digesting enzyme, lipase.
As your appetite returns include only high quality vegetable oil helps keep Gallstones from forming. Keep meals small and spread to food throughout the day.
If the discomfort isn't subsiding you may want to do a liver-flush to expel the mucus congestion. It may temporarily shift the inflammation to another part of the biliary system and the toxic bile may make you vomit, so be warned. Whether you let nature take its course or help it along with a Liver Flush you are in for a rough week but you will still have your gallbladder.