Hi all I'am a 30 year old male and have had this constant pain in my stomach for over a year now. Its on the right side allways there like a dull ache sometimes like a knife is twisting in there. I have been to the doctors and had severall tests including

Blood Tests
X - Rays
Ultra Sound

All came back negative . I was also given some gastro tablets but they never worked Iam at the end of my tether and no can tell me what it is does anyone have any Ideas .. Thanks in advance