This all sort of makes sense. May be you have a vision problem.Sometimes when you are sleepy you see things differently. (Example, One time when I woke up I was sort of tired but not really and I thought my light green tamagotchi v3 was a yellow one.) Okay, okay. I guess that this might be a glitch. Did you wet your tama? Did it fall of the tallest building in the world? Maybe you DID NOT do anything wrong and every thing was completely how you said it was.
Here is one possibility:
Your tama was completley how you thought it was and then someone recorded the sound of your evolving and then reset it and now you had different tamas. When the tama was evolving the person also played the recorded version and then you got distracted while hearing TWO evalutions at the same time and the ran out still playing the evalution on the recorder, and then you thought some wacko thingo happened.