My brother had a blood trail like this three years ago on a Buck. We had great blood and could easily follow it at first but then it slowed and when the Buck hit the open field approx.600 yards laterwe lost the trail. Three weeks later on the first day of rifle season my Aunt shot this buck. He was chasing a doe not 500 yards from where my brother shot him. He still had the wound from my brothers arrow. It hit just below the crease at the shoulder passing in and out of the deer without hitting any vitals, basically just went through the hide and some muscle. I think if your deer has gone 2 miles without bedding that the deer will survive. JMO.