First time hatcher here with shipped eggs (odds stacked against me, I know) with 20 eggs that candled well (disposed of 8 that never developed). Today is day 21 and this morning we got our first pip! I was super excited. A couple hours later the pip was ever so slightly larger, but no pieces of shell have fallen away, and the chick hasn't created a hole. Uh oh...has he ran out of air in there? Starting to get worried. No other eggs have pipped yet. Thanks in advance.