Oh MummyA I'm so sorry to hear that your marriage is falling apart. How terribly difficult for you. As Melies suggested, do you have family you can come back and stay with for a while. Do you have friends over there you can confide in and talk it over with. Sometimes just sharing this with RL people can make a huge difference. Try to take each day at a time. I totally understand not wanting to have a scan while you have so much else on your plate.
You do have plenty of time to for sorting out birth plans and birth partners, so if possible try not to worry about that at the moment. It's completely normal to worry about everything all at once and easy to get mixed up about which things to think about in a logical order.
I can also imagine how terrifying it must feel to have deal with everything on your own, but remember 2 things. Firstly, there are lots of women who have gone through this too and have managed, (and actually managed fine), and secondly, although you may feel very alone right now, I'm sure your friends and family will be there for you and DS so actually you won't be alone.
From the short time I've been on this thread, you've always stood out as being so supportive and kind to everyone, and if you are that kind to strangers you've never even met, then I can only imagine what a wonderful, thoughtful person you are in RL too. This is the time now for everyone to return your kindness and support back to you.
We, of course, are also here for you whenever you need us. Big un-MN hug to you and your DS xx
And thank you and well done for plucking up the courage to tell us because I do appreciate that is not an easy thing to do.