It could be a nock/rest problem. Your rest may be too low or your nockset too high. That would put the apex of the tragectory farther out.

Shoot from 5 yards in 5 yard increments all the way out to 50 yards and see what it does. Most people have the apex of their arrow flight around 20 yards. The arrow will cross your 20 yard pin twice. Mine does so around 12 yard and then again at 20. Between 12 and 20 I have to aim a little low. Under 12 I have to aim high. At 3 yards I actually use my 40 yard pin.

The drop ought to be pretty even from 20 to 30 and then 30 to 40 if you are shooting anything over say 220 fps.

Again, I would check your nock point and your rest and make sure they are perpendicular to the bow. My guess is that your rest is low or your nock point too high.