Iam 23 yrold not ovrwght last three days i've been feeling pulse in my stomach in between when iam sitting for long ,eating something, or after i go to the washroom do i haveto be worried about it or is it normal and will go itself and why isit causd?

An abdominal examination is recommended. It may be normal, but it is best to follow up. If you experience dizziness, light headedness, vomiting or pain, please see acute care.

If you're adept at feeling your pulse in the neck or wrist & the pulsation in your abdomen is synchronous with your pulse, then you're feeling the aortic artery beating. This is easier to feel in thin people. I recommend having an MD examine your Blood pressure, pulse rate and examining your abdomen to check for an aneurysm or other abdominal pathology.