I know this feeling well.
My daughter has always been lively and full of energy and the picture of health.

My son, has always been less blessed but still generally healthy - he had asthma and horrible allergies as a child and was sick a lot but the normal childhood things.

He is now almost 30 and gets around like a much older man in spite of the fact that he is a good weight and fit. He hurts all over, all the time and you can tell he just doesn't feel well. He talks to me about how bad he feels and he does follow up with doctors but he continues to ache more every year. Like Blessings - I want him to stay on top of things but don't want to scare him either. He just seems to be me all over again in terms of how his health is progressing though.... I just wish I could take all his aches and pains for him - fortunately - he has not, so far, mentioned any numbness anywhere.