I know that this situation you are living is really hard. It's expected that you feel sad and worried, but you can face the panic and axiety attacks. I suggest you to take your time, go to some quiet place, like your room, pay attention on your feelings, take a paper and try to write, in topics, what really makes you feel bad. If your problem is when your parents will die, try to think what, in this case, makes you feel bad. For exemple, to be alone. Try to face your personal and psychological difficulties. After writing your fears, rip the paper and imagine that, in this moment, you start to face your fears. And keep on this way.