FungusFinder

I think you are on the right track. That's plenty deep to do some damage. That broadhead wiggling around in there will do its job. As far no blood, well, the arrow is probably plugging the hole. Granted, that's gonna make for a tough time tracking but not to worry. Go in later like you suggested, but allow enough time (daylight) to track him. Maybe take some marker tape and leave it as you go so you can get an idea of how/where he is traveling and to know where you have been already.

I've arrowed a few deer myself where the arrow did not pass thru which made tracking difficult. One things that works for me is don't over think it as far as tracking goes. Get on a the trail and just ask yourself, which way would I go? I know it sounds silly and simple, but it has worked for me on many occasions. That combined with a visual reference from some marker tape will increase your odds of recovery. Good luck, and let us know how it turns out, either way....