Stay with it. something similar happened to me. I shot a buck and was giving it time to expire, when after 15 minutes two coyotes came down a trail and started to follow the trail my buck went down. I got down checked arrow and everything was good. Good blood for about 3/4-.9 of a mile and blood was gone. There was beds and coyote tracks and I think the two coyotes kept bumping my deer. I spent 8 hours that day and 3-4 hours a day for 3 days following, never found deer.