Mine doesn't get sick often, had both rotator cuffs repaired, whines until he makes up his mind to go to the Doctor, then suddenly it doesn't hurt anymore, still needs the surgery but, stops whining. After the second one just repaired in Feb. this year.
I am not a nursy type person, Son just always slept and that is how I knew he was sick, one Daughter also, other Daughter like me and just plugged along or very seldom got sick.