Blood trails can be weird/tricky or even non-existent.
I killed a buck in 2009 ... double lung shot ... the buck ran 30 yards and fell right over in front of me. Not one drop of blood until he fell and it was a complete pass thru ...... that is why it is so important to watch your deer after the shot (that is NOT the time to do your victory dance for the camera like the idiots on the hunting shows) Watching the deer after the shot will help you recover more deer.
Congrats on getting your deer!