so tonighti shot a 6 point. at 28 yards. quartering away, lumenock showed the hit right behind the shoulder halfway up. i thought it was a perfect hit, lung and heart. watched him run for over 200 yards, then fight to keep himself up for a few minutes and finally bedding down, i watched him untill it got to dark. waited over and 1hour 15mins. went out couldnt find my arrow no blood. found were he bedded down. and founds some blood, not alot, then found another spot of blood like he brushed up against something, but in the end came up with nothing. what do you think happened??