Target panic...You might have it. You might not. It could be your tiller, like Double Tree said. Your bottom limb might be a good bit stronger than your top limb and, if you don't have the weights in each limb balanced, the bow could well be fighting you. If it IS the tiller and you don't fix it, you could easily wind up with TP.

Here's what you do. Hold the pin on the dot and hold it on the dot while you slowly draw the bow. Watch the pin carefully. If it pulls down and off the dot as you draw, either take some weight out of the bottom limb OR add weight to the top limb, or both. And vice versa... If it pulls UP, then take weight off the top limb or add to the bottom limb.

The idea is to get the bow to sit dead even in your hand - where that pin will not pull off the dot, either up or down - all the way through the draw cycle, aim and shot. Some bows will do it with both limb bolts bottomed out. Most need some adjustment. Some need a lot of adjustment.