I’d say plenty of men really really want kids so they do understand baby fever. It’s just wanting kids very bad and usually it’s when people about to run out of time due to age.

Personally I can’t say I had it. I’d i did, I blocked it. I only have one and I was young but always wanted more and that didn’t work out so I just had to accept it. No need to mope. I now kind of have grand babies fever I think lol As I’d like to have grandkids but I am not going crazy about it.

My daughter really wants children but it doesn’t mean she must have them like today.

I think your wife’s desire to have children right this moment is somewhat unusual as she is quite young and in no position to have children. I am not sure it’s baby fever, seems that maybe attempt in masking all other problems