I know you're getting antsy, you don't want anything bad to happen, but lemme tell ya, things just happen. I have opened many many eggs before and have only lost chicks from not opening them in time. I don't play by the rules tho. Many people are against opening eggs as they'd prefer to let nature take its course. It weeds out bad genetics to let the chicks die who can't hatch on their own. I don't have a big enough flock to let this happen. This is certainly a special case tho. I'd definitely open it but if you do you need to expect the worst. Every time you take the chance opening your eggs it could go very wrong.