J.S.
I have an interesting tidbit to share with you....
I was that "Baby A" born to my mother and "Baby B" did NOT make it. After my parents shared the news with me many years later, I actually had a dream about being in utero and saying good-bye to my twin sister. I was so sad to be "alone" in the womb, but knew it was not my sister's time to be born.
My mother gave birth to another girl two years later. My sister and I always joke that she was my long lost twin who just wasn't ready to come to earth when I was. Of course, this is all just our surmising, but it is interesting to think about. Just a commentary I guess on how things always seem to work out for a reason, although we rarely know why at the time...
Best of luck with Baby A. You never know, perhaps Baby B is yet to come!