For the past couple of days, i've had a twitching right under my ribcage in the center. should it be checked out?

Twitching: Twitching implies that there is some irritability of an abdominal muscle which,if localized, is merely a nuisance disorder. A pulsation would be from the aorta which is the largest artery in the body. If this symptom,especially if pronounced, persists have your physician examine and advise you.

Rib twitching: Is there any pain or swelling ? Does it come and go ? Any history of trauma ? Have u had this previously ? Probably u can watch it for several days more if answers to questions posed are no