That's not true! You deserve them as much as everyone else does, doubly so as you're going out of your way to help others. I know I can't do much, but at least that... that's something I can do, to repay your help.
Besides... you should take care of yourself. It's not good to neglect yourself, even in a situation like this. I can understand why you might feel the need for that, but with me, it isn't necessary.