J.M.
You have gotten some really great advice! I have just one thing to add as I have gone through a similar situation, and we now both work full-time. As men sometimes do (not trying to put them down, they just think a little differently than women) he probably doesn't realize or has even thought about the stress he is putting on you. If you haven't already, sit him down without the kids or parents around and explain the situation, your fears, and outline the finances for him. I take care of all the finances in our house so sometimes I have to sit my husband down and say "No, you cannot buy that game and this is why...". I hope this helps and if you want to talk anymore feel free to email me at ____@____.com.