DUDE!!!!!!!
if you dont find that deer, you shouldnt be "getting" another today. you should keep looking for the deer.
if ya shot it in the heart it wouldnt last long at all, usually instant death, but a small tear in the heart could let em run fer a bit.
my guess is ya found him at 1st light this morning, just about 40 yards away from where ya got last nite. if so, then congrats!! where are the pics?