Hello there. My name is Ian and i felt compelled to reply to your message. I lost my dad to a 10 day post op haemorrage following his whipple procedure at southampton general hospital UK he was 53. He was fit and healthy before his diagnosis and it came as a sudden shock to everyone. Although my situation was slightly different i still can't believe he has gone. My fiancee said the memory of my dad lives on in me and i truly believe that. The memory of your dad will live on in you too because you loved him and he did you.
Try and remember the good times and the sad memories of his passing will ease. I believe my dad is with me everyday in everything i do. I am so sorry you have to see your dad suffer from this disease but, you got to say goodbye and told him how much you loved him.
My thoughts are with you mate.
Take care and i am so sorry.
Ian.