Blisters

Rebecca
So we are going to the doctor tomorrow. But- I noticed a few blisters on my sons skin (13wk) they are under arm pit, head, leg and belly/ that was this morning. This evening there are now more- head, back, legs, arms. He doesn't have a fever, not itching them and no rash. Just random blisters. They aren't clumped together. Any thoughts??