Is it normal to have server upper right abdomen pain with fever and can't find a cause?

No it isn't. Perhaps you need a second opinion from a general surgeon or a gastroenterologist. Pain could be related to your liver, gall-bladder, duodenum, large bowel, kidney, or adrenal gland. You might need a ct scan or an upper &/or lower GI series of x-rays. Combination of pain & fever obviously has a cause. Good luck.