Sometimes when stomach shot the stomach or intenstines come out and plug up the hole which results in not much blood on the ground. If you had hit the liver the arrow should have had thick red blood on it. Sounds like you might have hit the liver if the blood you found was bright red and thick.
Doubt if you hit liver, rarely will a deer be able to move after 5 hours. Sounds like intestine to me, intestine shots can go 24 hours before posioning system, it's worse to recover then stomach. Real tough one to recover. But, still check all water sources, then grid search.