Yeah, I would call your doc. They may have you press certain areas to see what response your son has. My husband had his out several years back, the symptoms went on for a few days and it wasn’t anything overly concerning, he actually thought he had eaten too much at Thanksgiving. His pain wasn’t even specific to the lower right quadrant. Ended up in the ER Sunday night just to be safe, doc pressed on his belly, he yelped, got a quick scan and went right into surgery. Doctor said it probably would have burst Monday morning.