2 smiley faces in one cycle

So let me start by saying, I know it’s suggested that you don’t continue testing after the first smiley face but because my cycle was off so much these past couple of months, I couldn’t help myself. I got my first smiley face (clear blue digital advanced) on Sunday morning (3/3) and it stayed for 2 days. On the way home however, I got my peak on Monday. Today the smiley face on CB went away so I tested again, and got another smiley face. Has this ever happened to anyone else?