I chimed in with my sympathies, glad to find another man to commiserate with about what seem common complaints, yet none of the other expectant fathers in the room seemed very amused or even interested in our conversation. Perhaps they were shy, or hadn't experienced the things that Jack and I had, or maybe they just felt uncomfortable discussing their experience of pregnancy in public. I do not doubt that this third option helps greatly to explain things. Pregnancy can be very hard for a guy.
Men get very confusing messages about how to be during pregnancy.
Get involved and then get out of the way. All these attitudes can be heard from men or women or the more amorphous culture at large. As a society, we have little consensus about how expectant fathers should be. Part of this is because women are so good at being pregnant. Not that women universally like being or want to be with child, but their bodies usually seem to know how to do it pretty much without any help.