The lightbulb doesn't usually go on for me that I'm in labor until around transition for me, and moaning through contractions is about the first thing I'm doing when I figure it out. I usually am having a "bad day" before that, trying to do everything I should, and complaining the whole way about how I wish the baby would just kick me into labor already

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At some point shortly after that, DH will usually let the important people know things are happening, and then baby arrives. I usually lose track of anything else that goes on during that timespan. I have no idea what I'd do if I went into labor without DH there, honestly. I'd probably still be in denial as I was pushing the baby out, sure I was just pooping.