I don't think your behaviour is in the least bit unreasonable. If anything I have the same as you, I was paid well when we met, now with DC's I do work, but DH makes a hell of a lot more than me. I believe you should do whatever makes you happy. So I've gone from big bucks in a job I wasn't that fond of, doing something I enjoy.
I get the, how about getting a job then, you're lazy, etc. I don't feel I am in the slightest. Odd occasions I've had to borrow from DH, that's right he's on a good wage & I can borrow. He'll moan he's not a cash till payday company. Maybe he should add interest. Where in my mind I've done a lot for the family, also helped him out, so I think I should get a treat or something now our situation has swapped.
Do you think your DH is gas lighting you at all? As I wonder that sometimes, as I don't bite when he's in a mood, but I feel pretty miserable. We've been together a long time and he knows what buttons to press.
Have you asked DH what difference the money would make? Is he wanting a bigger house, new car, fancy holidays?
To me money doesn't make you happy, ok if I worked in what I'm trained in is earn a lot more. But life is never that simple.
Im sorry you're having to go through this. I think it's pretty common for money to be an issue but it rarely seems an issue with men until they are earning and it's all about more, more, more. 