Baby sticking butt out hurts ?? Ahhhhh

Emily
Does anyone else's baby move in ways that hurt as bad as a contraction? My little man will stick his entire butt out and it hurts so bad I can't move, and seriously feels like a contraction even though only side of my stomach is hard. My whole back, groin stomach and even vagina tenses up and it hurts like hell. Is it possible this is a contraction that I only feel the hardness on one side because he's on that side or could he really be pushing out that hard that it hurts like that? I'm 36w 5d