The right front side of my stomach hurts when i suck in or stretch. should i be worried?

Right side: This may be a strain of the abdominal muscle on that side. However, if there is continual abdominal ache in the right lower abdominal area, and especially if the area is tender to touch, appendicitis is always a concern and such symptoms call for an examination by a physician. Right upper abdominal discomfort and tenderness occur with gall bladder disorders. See MD if symptoms persist.