CONGRATS! I had my 2nd daughter at 40. I was a little shocked when I saw the words "advanced maternal age" on my chart - I didn't feel 40!
Open mind and one day at a time is the best strategy! You might also want to try some prenatal yoga or join a support group. I found lifelong friends when I was pregnant and it was great because we all have kids the same age - facing Kindergarten now - gulp!
I'm so sorry you are facing this! I know it must be very, very hard to wait for results.....I don't have any advice except to try and concentrate on your kids this weekend and seek out support from your husband and close friends.
I am sending (((hugs))) and positive vibes your way...