tea, you are perfectly articulate !
where to start ?
OP, you are not being a fishwife
your husband is acting like an arse and then stonewalling you when you try to discuss how bad you are feeling
that is not someone who respects you as an equal partner
you are watching the pennies and he is acting the "big man" with silly, show-off spending when you have a 2nd child to be born soon...who is he trying to impress ?
I share some of tea's little niggles wrt is there someone else in your marriage ? Possibly not gone too far just yet, but I am picking up on a little "distancing" from him. Is he secretive about his phone, FB, email etc ? The "blowout" nights (and days...) and going incommunicado are not the actions of a family man, sorry. His defensiveness about it when you challenge him is designed to shut you up and speaks volumes about where you figure on his "importance" scale.
His laziness around the house is also out of order, when you are heavily pg and still working. Is doing a bit of housework beneath him then ? I don't call a man who doesn't look after the environment you are living in, but leaves it for his knackered wife, an "equal parent"
Now I feel like I could actually go on and on saying stuff you really didn't want to hear. I think it telling that you very quickly, and with great evident relief, latched onto the "well perhaps I am BU and fishwife after all < phew >"
So, bottom line, if you want things to change, you have to be 100% sure that what you are feeling is valid or he will just dismiss your bad feelings as a minor inconvenience to him forever.
I think they are valid.
What do you think ?