Do you both mean that I might be jumping too quickly to divorce?
Just cause certainly isn't an issue. But your feelings will change with time, give yourself some space to make sure your decision is not based on reacting to hurt.
Protect yourself by all means and get an atty consult to figure out what the next steps are. I just know in my own sitch, how I felt a few months ago is a lot different than how I feel today. And I was so hurt and upset last fall that it's a miracle I didn't file for D. But now I'm glad I didn't. Because if it came down to it and I did have to file in the future, my decision would be controlled and pragmatic. And that perspective can usually only be gained with time.
Didn't you mention earlier that your H goes to IC too? I wonder if his therapist even knows. Regardless, there are programs he can get into if it's a sex addiction. You'll know about that coming from aa.
Maybe it'd be possible to just remove yourself from the sitch & arrange H visitation with your two little ones & just leave it all alone for now. And get your finances separated as much as possible. Especially before the baby comes. But as far as filing, you don't have to make a decision right away. You'll know when you're ready because your choice will be based on you wanting to live with intent and choosing your direction. Not just because 'you don't see any other alternative'.
But your feelings will change with time, give yourself some space to make sure your decision is not based on reacting to hurt. 
