I also resign my job four years ago to get a health baby, My wage is more than $4000/month for I need contact lots of poisonous chemicals. I stay at home for 2 years but I am happy to have my first daughter. I think if you can solve any problem by money, the problem is nothing. you can try to be a teacher in privite school and ask your husband to take care of his body. or it is hard to him to take care of family once you have baby.
good luck