I can't tear my eyes off my incubator! 4 other eggs have started external pipping and I even hear some chirping! Day 20/21! The other egg that pipped early is still going, but like another member said it did so the wrong end. I hope it'll be ok. I did place a humidifer nearby and a bowl of steaming water with a fan blowing at it in the entire room.
It was about 24hrs after I placed them into lockdown, but these are bantam eggs and I heard they do hatch early sometimes.How far into day 19 are you? Your incubator may have been running high. It may not hatch till day 20 which I have had often.