Help!

Okay - I’m a nanny for a 3 year old and 1 year old. The 3 year old boy went potty at least 20 times yesterday and this morning 3x before he went to school. When I picked him up his teacher pulled me aside and said he went 5 times which is strange for him. Usually I have to remind him to go. I called the parents and they’re going to take him in. Does anyone have any idea what this could be? He has no fever or pain that I know of. I’m just worried