doggy style have to pee sensation?

My husband and I have tried doggy style a handful of times and have never really truly tried to use it, just experimented with the mechanics of how to position etc., kind of trying out new positions slowly. A couple of times he's tried thrusting for a minute and I always have to stop him because it makes me feel like I have to pee, even if I JUST went right before we got started. Does this happen to anyone else? Why? Is there a way to get around it? I'd like to try hitting my G-spot in sex but that position for some reason feels pretty weird quite frankly, and mildly awful..?