WOW! It was a long day!
Anyway, I sat in my blind running through every scenario, trying to imagine that arrow as the deer trotted off. Had bright yellow feathers and a blaze orange cap dip on the arrow so I saw pretty clearly that the arrow was sticking out of the deer a solid 12-18" ... that's generally not awesome.
I finally came to the conclusion that based on the angle and my shot placement, I'd have either a gut shot (if I got little penetration), or if I got 10" + of penetration I'd get at least on lung, and maybe the heart.
So, a little more back story ..... After the shot the deer had trotted off, not ran, and just like alot of gut shot deer, stopped for nearly a full minute at about 30yards, behind a thicket ... I could see the yellow fletching, not the deer.
I decicided to wait until 10am, 2 hours after the shot, and look for blood at the first spot the deer stopped, and also see if the arrow was there. I figureed any signs of a gut shot and I'd back out till evening.