I am very sorry you are going through this. I lost my mom to Breast cancer when I was 17. I also have 3 younger siblings the youngest of which was 9 at the time. I know each situation is different, but some things I wished would have been different in my situation were honesty, I wish I would have known exactly what was going on from my parents and the doctors. Having a better understanding on what is going on can make you feel a little more in "control". I wish we would have celebrated her life more, every single day. Trying to make the best of the time you have left and making good memories will make things a bit better. Get involved. In relay for life in some type of walk/run, find people who are in the same situation because support is the best thing to have. Also, never keep you emotions locked away. Speaking from experience, it is the worst thing to do. Cry, scream, get mad, you're allowed to. When the time comes, you will find helping others will help you "heal". I have found this to be true becoming a nurse. All I have suffered has led me to be a more compassionate, caring, empathetic (almost) nurse. He will always be with you, cherish these last days.