MOLD: Is It or Isn’t?

Did a home mold test with Mold Armor. I did one petri dish in my kitchen with the a/c blowing on it for 10 min and did the same thing in my bedroom. I incubated it for 96 hours and got something from the kitchen, but not the bedroom. (One single response displayed – It’s green & white). Is it mold, mildew, or a fungus? And, most of all, should I be worried? Thanks, Scott