Cheryl, Congratulations!
It happened that way for me, too. It was a shock to find an egg. I was so thrilled. Still am. I have 5 girls, and they've been laying for about 2 weeks. I have a little egg production chart, where I keep track, and make notes on who laid what, and how big the eggs are, etc...
Such fun! Just wait until you bust one of your ladies coming out of the nestbox, reach in and find a HOT egg. In this cold weather, it feels hot, not warm. What a hoot!
So, what are you going to do with it? Eat it?