RE: Proper form when drawing your bow
Will it matter what kind of speed your bow puts out when your shoulder gets so bad you can't shoot it? Your body is talking to you. Pay attention!
Go get the doctor to take a peek at your shoulder. When things you normally do start causing you pain, that's when you have to go to the doc. If he clears you to shoot, forget the speed and reduce the bow's draw weight until it's comfortable to shoot.
I highly recommend you use the straight, set arm draw method that you started doing rather than that push pull thing you were doing. It's much easier on the shoulder joint.