I just wanted to share my 2 cents:
In the short 7 wks I was pg, my dog went nuts. I think he could totally sense that I was pg and began rebelling. He is 100% potty trained but during that time he had quite a few accidents, which I don't think were accidents at all

. Since the pg he has returned to normal and hasn't had a single accident since.
I wish you the best of luck w/ fixing this problem or finding him a new home. If we didn't work so much I would take him in a heart beat!!