I could think of a million worse things to be obsessed over! I agree with the other posters, it is your son's problem, not yours!
I understand how you feel. We do not have children, we have our three little Yorkies, and we love them to pieces. We worry if their mood seems "off", we sit up all night when the weather is bad, (if necessary), because Darcy is terriified of storms.
My hubby just informed me today that he wanted me to call the groomer for Darcy tomorrow. I was trying to let her grow out a little for the cold weather, but he says long hair is "not her look"
. Just last night, when it was cold enough to use the electric blanket, I got up and slipped a heating pad between the folds of Darcy's blanket, since all her Jammies are in the wash.(She does not like to sleep with us).
When we leave the house to go out to eat, and to the movies, there have been times we both decided to go to the store "another day", and come on home because we didn't want to leave them that long.
so, I am sure your son would think we were nuts, too!
You are not alone here...we all love our babies!