I just had to wait until morning, and found it. The sun was shining when I lost it, so I couldn't see. It was a gust of wind. I am practicing in the house for now, and all is going well except my pug hates it.
Welcome. That was good news, getting it back. If you already haven't read about this, when flying outside, it's a good idea to remove the prop guards. It's like hanging an ornament on a Christmas tree . I learned from experience. I fortunately got mine down. Enjoy your new toy.