@stuck080813,
How long were you involved with MM. ? How long were you involved with the affair?
For the most part affairs occur when partners are not happy with their relationship. All be it that they don't bother trying to fix it they go outside for adventure instead. Anyway, does he have children do you?
From my experience purely with Forums an affair is exactly that, there is no love just lust and the want and desire that either party isn't getting at home.
If he is now ignoring you, he wants to stay with his other half. As he always did. In my opinion.
I appreciate you see love ... I don't think he does given the time frame that he hasn't contacted you.
So what are you going to do?
Your husband does not deserve to think that the child is his, given that he /s he is not.
What ever the future. He deserves to know the truth and if your MM doesn't come back? You need to realise this is a human being, a little one, that needs so much love and feeling a part of a life.
If you had an affair then things are not right at home. If you bring this child into this World make sure he/she has all the love he / she needs and deserves.