Aches and feels hard around stomach it happens whenever i eat and i find it hard to pass stalls. what could it be ?

Need more info: Your complaint has many causes, one of which is that you do not drink enough water. You also may not be eating enough of the kind of foods that are important like prunes, figs, foods high in roughage. I would advise you now at your young age to talk things over with your family physician who can best give you more information after a physical exam to rule out any possible organic problem.

Gi eval: Sounds like you may be having some issues with small bowel transit it would be best to see your local doc for a work up especially since this is occurring after all your meals