Congratulations to you and your family. My kids are 19 & 21, so it's been that long since I've had baby experience. I went to a baby shower yesterday and there were pregnant young women all over the place. I felt all those emotions you described for them and I didn't even know most of them!! I was afraid to let my dd drink the punch for sure!!
It brought back a lot of memories. Hope your pregnancy is healthy and everyone does just fine.