If you have a male with your hens, then it might be fertile. I just put 20 eggs from 3 first time hens. 17 babies hatched. So it never hurts to try and hatch them.
Congrats on the egg. Buttons are good at laying regularly from the start, so you will have lots of eggs soon.
Oh thank you. Yes theee is a male but I just thought the first few egg are not good or whatever but idc lol I have 5 in the incubator right now and yes.. its just the one hen laying.. the other one.. I suppose the male doesn't have a good grip on her so he moved on to the next ine which has been laying eggs for me fir days now.