You have received good advice. This past Saturday my cousin arrowed a deer, complete pass thru, arrow covered with blood and he was sure of a good hit. After waiting 30 minutes, we began tracking the deer. Not long after, he jumped it. We waited an hour and started tracking again. Same type of blood trail as you describe. 5 hours later, we ran out of blood to follow and thought we would not find the deer. To make a long story short, we finally found his deer around 200 yards from the last spot of blood. It had back tracked the trail. Also, what he thought was a double-lung turned out to be one lung and through the gut, do to the angle of penetration. Sounds like you may have the same type of shot. I believe your deer is out there, you just need to get some help and find it. Good Luck