Does anyone know why my LO will be feeding and then suddenly squirm and arch his back and then start twisting and turning with my nipple in his mouth? It hurts! I know I should unlatch but when I do that, oftentimes he won't get back on to finish feeding and instead will fall asleep or just not be interested in eating anymore. Sometimes, this happens when he is pooping but other times not. And I don't think it's a sign that he's full because he'll sometimes do it within just a few minutes into a feed.