I had a similar situation last season. I shot and my arrow nicked a branch and kicked low. When I retreived the arrow it was broken in half with white hair on the head and one tiny spot of blood on the shaft.
I tracked blood for 50 yards and it stopped.
We deduced that the arrow when it kicked low it must have grazed his leg and cut him. Merely a flesh wound though. Wont kill him, so take comfort in knowing that he is still out there to get and dont knock your self out about it.

The Brown-Down is ON!!!!

Steven J. Collins (Trock63)
Bowdaddy Productions