That's kind of what happened to me on my first days. Too embarrassed to show. Also found an old part of a window in my yard from the old house, that I will have to dig up.
But I'm still enjoying metal detecting.
Good stuff! Time to start memorizing those tones, strength, depth, etc. Try to guess what clues the detector is giving you. Learn to understand it, and you'll be pulling up all the goods in no time! Congratz!