I was just like you when I was waiting for Livi to have her babies....I was sooooo nervous!! I had no idea that I was about to stress and worry even more. It's like Mary said, be prepared to be stuck at home with those precious little beings. I did not leave Livi or her baby until he was 6 weeks old (I probably waited longer than what I needed, but we went through a lot with these babies). The first outing, I was VERY VERY stressed and worried....and that was just to ride with my husband and children to pick up a pizza and a few other things. We were gone one hour that time and I can't tell you how fast I ran to my bedroom to check on Livi and S'mores once we got back.
You will be fine....I feel for you because it wasn't too long ago that I was going through what you are.
Sending positive thoughts your way~
Tammy