Sorry for your loss Adam, I too lost my Dad that same day. My prayers go out to your and your family.
Sorry to hear about both of your losses.
I lost my dad six years ago. I know how it feels.
After you found out that he was gone and it set in, did you get an alone and empty feeling come about you? It happened to me, even though I was off on my own 300 miles away and not living in the same house as him. I felt as if I was now alone in this world. He was always a phone call or road trip away if I needed him, then he was suddenly gone. I guess it was a feeling of insecurity, knowing he wasn't around anymore.
Eventually you work through it, hang in there. If you need any help, we are here for you.