you can work till 65 or 75, and your husband can find a better job later, but you can only have child under certain age...if you are thinking about having another child, do not hesitate...good luck!
Think of the time , energy, money and other factors you have to pay for raising up a kid, and what kind of life you can bring to him/her.
If you don't mind all of the difficulties and have confidence to get through, then try to persuade your hubby.
If you yourself are not confident, having another kid maybe not a good choice.