So sorry to hear of the loss of your dad
I know that it was your greatest fear; now realized.
It's very raw and new right now. Time to take things one minute at a time and focus on just putting one foot in front of the other.
It's like a punch in the stomach right now but in time it will soften even though you will miss him.
I'm an orphan too. I know there are times when I could use some parental advice or support and there's no one to call.
Wishing you peace and strength,