Do you mean it has internally pipped? If so that is fine shouldnt be an issue. I have 20 eggs right now on day 25 and 9 have internally pipped on my last candle tonight.
Hi Gyoza. I just hatched my Pekins. They came out within 3-4 hours once a hole is there. Although mine came from free-range Pekins, one had a hole for 32 hours before I helped it out... and it came out a Mallard. (Someone wild flew in and took advantage of one of the girls!) They tend to hatch in the morning, so be patient and just be sure your temp and humidity are up and staedy. Good luck.