Thank you, Icyalittle. As you say, so many issues. I don't allow myself to focus in on me, a there is a baby out there, who may or may not still have healthy problems; his mother 3 weeks post-op getting used to the demands of this little chap (if he's anything like his "father" he'll be hard work!), unknown to us, and we have no idea how much family help she has; and my DS clearly with difficulties that he is trying to deal with.
But for myself - this isn't the way I had envisaged becoming a grandmother (if indeed I have become one), or that I've observed with friends and family! Usually huge joy, celebrations, champagne, visits, time off to help the new family out, knitting, presents. DH has admitted he feels nothing for this baby. I guess I can't expect him to. But I'm in a state of flux and wondering.
Thank you all for listening, and to those who have responded to me here any personally. I shall, of course, let you know the outcome. Off to Austria this weekend with a group of friends, which will be a lovely distraction - but none of them are party to this information! What should be a cause for celebration (if he's ours) is, for now, a secret.