Hmm i m not a mummy.
But mayb you can recalculate the sums in your household and see what you can save on and try to save more during this time to be able to manage your finance. If hubby's salary is stable dont't need to worry so much just dont't spend like before.Those things can save then save.
Meanwhile, you can start looking for jobs not sure if anyone will hire but i guess if a company is really short handed, they will hire you. However since you are pregnant, you might as well take this time to rest so go for interviews now but start work when baby is born..