Hi Jessica,

Facing the loss of a parent is hard enough at any age but more so when you're in your teens and there's only the two of you. 

Anger is about the most normal emotion to feel in the early stages - aongside denial which is our mind's way of coping with tragic news by only acknowledging small amounts at a time. Your Dad is probably at a loss about how to talk to you about it too. Sometimes talking about a subject somehow makes it seem more real. That said, there are some things you need to know which only your Dad or his oncologist will be able to tell you. The most obvious and the hardest to ask is how long does he probably have left to live? If you're not comfortable about asking your Dad, go with him to see his doctor or nurse and ask them when your Dad is with you. 

Once you have an idea about that, you can start to make plans to get the most of the time he does have left with you and build up some more happy memories. 

Good luck to you both

Dave