Don't get frustrated, just keep practicing. It could be a form problem, an arrow problem, or you may just need a little more time for your fur covered computer (brain) to make the adjustment for you. You have gotten past the first, and probably hardest hump--consistency. Check your arrow flight, have someone that knows watch you shoot or video yourself shooting and look over that, keep a loose grip on your bow, and stick with it. You will get it figured out.

Chad