Our khaki campbell female was faithfully laying on her eggs however towards the last couple of days she was no longer interested in laying. Unfortunately, we only have one viable egg left. I bought an incubator yesterday (on day 28) and put the egg inside. I have the temperature at 98.5 with about 70 percent humidity. There have been no sign of pipping yet. I'm wondering if it will be hatched late. I am scared to death about having humidity that is too high or too low. And I don't know how long to keep trying to hatch the egg. Any recommendations?