M.W.
First off. God will never give us more than we can handle. He will present you with opportunities so that you will be able to provide for your family.
Second, I don't know a single person who wishes they WOULD NOT have had the children they have.... I only know those who REGRET NOT HAVING MORE BECAUSE SOMETHING IS MISSING FROM THEIR FAMILY>.........
This is a decision that you and your husband need to decide. Not us moms on here. Pray about it as a family and you will be able to make peace with a decision one way or another.......