Nicole,
Caring about those around you and providing a good life for them is something we all think about. The secret is to enjoy it not fear it going away. I watched a couple of my family members live their lives the way you are describing and it left no room to enjoy anything. The old saying is change the way you look at things and things change. All you really control in this world is your own actions and how you respond to/view life. You have a beautiful son, you are caring and value your family and a life that is meant to be enjoyed. Take some time alone to feel the wind blow on your face, watch your son sleep in the comfort of the space you have given him and know that you are here to enjoy all those gifts even when they are sick. 🙂