My son can not stand getting his diaper changed lately. Probably for the past month, every time you put him on the changing table, he cries and wriggles and screams when you don’t let him off and go to change his diaper. Unless he’s distracted with something, that’s what he does. I haven’t noticed any diaper rash or anything that could be causing him pain besides a little redness here and there, but the way he acts makes me think it hurts! Is this a normal thing??