What can I do?

Two months ago I gave birth to our son. While he is a huge blessing, he really destroyed my body. So least to say I feel fat and ugly, worse then ever before in my life. As I am learning my body again I find out that while my Husband was gone for work he flirted with another woman. Not only that but watched porn like it was a sport. We have been trying to work things out but he hasn't stopped. It also has made it hard for us to make love because I question if he is thinking of me in the moment or what he has seen. I don't know how to handle this. I love him 2nd only to God. Please pray for us and if you have any advice on dealing with this please share.