I have sharp pains in spots on my stomach. Sometimes their under my ribs. Tylenol and mydol don't work and heat rarely does. It doesn't feel like cramps so much as someone taking pokers to different parts of my stomach all at once. My period is now irregular and has been for a year and a half but it was regular for 3 and a half. I was wondering if it might have something to do with my menstrual cycle but I'm not sure.