Dragon,
You are the loving, caring, and strong child every parent hopes to have. I applaud your selfless efforts, love and support you have and continue to put forth. It is a difficult road to have to travel when a parent becomes ill especially at your age. Bravo to your maturity.
I do however echo the advice of others who have posted. You need to take care of you as well in order to continue to be there for your mother.

Please don't hesitate to PM or e-mail any questions or concerns to me.

Mike