Have Hope, I know what it's like to lose a father. It's hard. My dad passed suddenly, with our having little warning. He'd had a heart attack and was in the hospital, but we thought he would pull through. He was 77. That was many years ago, (I am 67 now.)
I still miss him, just like you'll always miss your dad. Hang on to your good memories of him, dear one. He'll always be special that way.