Cramps in stomach mainly in the morning made worst by caffeine and relieved by lying down. all blood test, ultra sound and h pylori test normal.

Possibly stress.: This sounds like a general symptom that might be associated with stress or anxiety, possibly from the tests just done. If the tests were not done, i would have suggested a possible stomach ulcer. I would say relaxation, less caffeine, a bland diet (milk, vegetables), and rest should help a lot. If not, go back to your doctor, and get checked again.