I see that no one has responded to you yet. Perhaps it is because yours is a rather unique situation (given the pregnancy). My WAW had (and may still be having) a PA with OM. We've been separated since the first of Oct. and she filed for D three weeks later. As a result, there are a few similarities to you, but some key differences as well.
Still, I'll offer what I can. It is said that where there's life, there's hope. This is true and as much in your case as any other. But the situation is not good and you need to prepare yourself for the worst while at the same time working to save your M (if that's what you want to do).
You provided few details about how you are feeling, what you are currently doing, the lead-up to your pending D, etc. so it's hard to comment very much. Have you read Divorce Busting or The Divorce Remedy? If so, are you doing the Last Resort Technique? Are you seeing a good counselor? Please fill in a few more details for the benefit of those who would offer their insight and experiences to you.
As a fellow Oregonian, I know the draw back home. Still, as I type, I hear the rain beating against the window and wonder if the gloominess outside is dragging my spirits down. Perhaps a different area with fairer weather is a blessing in disguise.
Please keep us posted on your situation. There are lots of helpful, supportive folks in these forums and I'm sure you'll get a lot of good advice.
