Congratulations Ladybj. Your life is about to become so much more interesting and rewarding.
I well remember being in the same place many years ago and I cannot imagine not having any of my grandchildren in my life.
If I can pass on one piece of wisdom - remember that you are the mother of the mother, not of her child. Support her in every way possible but respect her parenting style and decisions.
Spoil your daughter by giving her money for new clothes or underwear both before and after the birth. If possible go with her when she goes shopping and just hand over your card. I did this for my daughter, daughter in law and now one of my granddaughters. I have done this because I know that a mother puts her own needs to one side when preparing for a new arrival.