Which BH? (junk BH will not fly right because they are not weighted evenly)
first check spine, if you are 100% then you need to raise your nocking point and move your rest to the left. start out moving your rest about 2/32" then move it 1/32" after you re-shoot.
if you don't feel the need to do any of this and from the sounds of it you never shot the BH before you went hunting to even see if you could hit the target at 20 yards...go pay $40 and shot the rage...atleast that way you will hit what you are aiming at.