I was diagnosed with cotscohondritis on both side of the lower ribs. i also feel stomach discomfort on both side just right under my ribs. it has dull but sometimes sharp pain. im wondering what might be causing it?

Could be 100+things. Discuss with your team who knows you My hunch is it is the chrondritis.

If the upper abdominal discomfort is not accompanied by aggravation by a deep breath or tenderness at the junction of thr ribs &breastbone,I'm reluctant to attribute the symptoms to costochondritis & would be thinking of gi conditions like gastritis or peptic ulcer.Gall bladder or pancreatic pathology are other possibilities. If your PCP agrees, consult a gastroenterologist. Take pepcid