Hello Gretchen - I'm so very, very pleased to hear your news - so glad that the u/s went well (bet your heart stopped for a while between having the doppler and the scan). I'm glad miniGretchen is doing so well.
I'm sure you and your DH are going to be wonderful parents and that having the baby is going to be a terrific experience for all three of you. I think what you said about suddenly worrying you might have missed out on children was very wise - often when people ask if they should have children, MNers advise them to think how they would react if they suddenly found having children wasn't an option - and then to go with that gut reaction.
My children are truly the most wonderful things in my life. Although my life now is a very different life to the one I had before they arrived, so that just as I couldn't really imagine what being a parent might be like before DC1 came along, now I can't imagine where my life would have been without them. Perhaps this is nature's way of protecting us from regrets about what might have been?
My DD is so tall and bright and beautiful (PFB OK 
) that she lights up my day. My DS is so small and funny and free with his kisses and cuddles that I feel sad if I go without his solid little body flinging itself at me every few hours. They make me a different person - not always a better one, but it is a very exciting journey to make and one in which I think all emotions are more intense (I have never cried so much or laughed so hard as I have since becoming a parent).
I truly hope that you and your DH get as much joy from your little one as I have had from my two. It isn't easy - but you know that as you have already been having some of the worry and fear that never seems to quite leave you once you become a parents - but I think you will take it in your stride.
Sorry for wittering on - you did ask! .
I'm glad you have a plan - not long now to the CSV test and suddenly being able to go public . Best of luck 
.