Honey, your H is in so deep right now that 'getting rid' of you is the only way he can think of to make himself feel better.
Let him go and do not contact about anything other than kids or financial. Even then make sure that it is absolutely necessary.
This is the only way your H will realize that it is not you causing his unhappiness. He's looking for ways to justify his behavior. Step back and give him nothing.
Do as Eric says and let it out. Make sure you don't show or tell your H any of it.
2, you have my utmost respect. As hard as our sitches are on the board, I can't imagine dealing with this being pregnant.
There are a number of stories on the boards about H's leaving while their W's are pregnant. Have you been able to read about how any of them have handled their sitch?
It's a piece of paper 2, turn it into your shield.