It takes time to get your head around the fact that someone you care for is no longer in your life, especially when you have been caring for them as you have. Take time to absorb this and hold on to the positive thought that, though sudden and unexpected for you, it was a peaceful way for your Father to go and he has been spared the indignity of further deterioration of his life through dementia, something we wish for all our loved ones!
Thinking of you.