Sorry I can't type chinese druing work time. My son is 3 month old. This morning I found his right upper leg is bigger than his left upper leg. It's not very noticeable if you don't pay attention . But if you do pay attention, you will see the difference. Should I be concerned and take him to see the doctor? Another thing is his right cheek is bigger than left cheek. Does anyone has such experience? Thansk a lot!