That does not mean that your eggs are fertile.
1. Have you cracked an egg open to check for the blastodisc? If you don't know what that is, do a google search for "blastodisc in chicken egg".
2. Have you calibrated your thermometer and hygrometer? You must calibrate in order to know that your temperature/humidity are accurate. You can't trust the reading on the thermostat, or even on a thermometer if you have not calibrated. I use a good medical grade submersible bulb or digital thermometer in a bowl of water at 100*F to calibrate any other thermometer which can then be used to check the bator for accurate temp. Put your thermometers in the water, wait for them to equalize, then check the temps. Do the salt test for your hygrometer.
3. Does that bator have a fan? If not, you need 102*F measured at the surface of the eggs.
4. Only one egg? Chickens are flock animals. Plan on a 50% hatch rate, if your eggs are fertile, and plan on at least 60% of your chicks being male. Based on that info, you should be setting more than one egg. Do you have an exit plan for those males? Do you have the room to put more pullets in your flock?
5. Before you attempt to hatch eggs again, please read "Hatching Eggs 101" in the learning center. It will help you to manage your bator so you get a successful hatch.
