I'm happy to report that BJ is feeling better. He didn't walk up during the night and his stomach seems to be back to normal. I'm fairly certain that he reacted to a food I gave him. He gets Natural Balance canned food mixed with dry food. I gave him the Venison and Sweet Potato and that's when he got sick. The Venison may have been too rich. I threw that out and switched to the Lamb and Sweet Potato. Now he seems better.
We are both happier.