question: Female ; Have had stabbing pain below right rib cage, with abdominal distension and peritonitis symptoms/ rigid rib cage - severe pain and had it for the last 4 years. gets worse around ovulation and menstruation but sometimes is neglible. 3 weeks every month in pain and then it subsides although pain still there. electric type shocks over belly button and from below rib cage that go throughout the body and down the arms.. Peritonum?(navel) feels on fire on the inside mainly all the time. Worse when eating. stabbing pain gets worse when food goes in mouth!!! Burning sensation now in stomach area, but may be a result of tablets rather than the initial cause.