Is he coming down with a cold? If he is his nose could be a bit blocked which could explain why he keeps pausing as he will have to breathe out of his mouth instead of his nose.
The crying after a feed sounds exactly like my DD when she had colic. She was inconsolable for about an hour after each feed. Try rubbing his tummy in a circular motion after winding him or laying him on his front and patting his back gently to try and soothe him.