R.A.
HI there,
Could he be picking fights about money, but really be unhappy about something else? Is the stress of a 2 year old and possibly another one too much for him? Is he getting enough down time for himself weekly? If not, he may just feel overwhelmed and stressed and sometimes men don't know how to deal with their emotions and stress directly. Do you two have any fun time together alone? I have a 2 y.o and a 12 week old and these are things that stress my husband out...we both work full-time and by the time we get dinner reday, eat, get the kids ready for bed, we are exhausted and we can snap and be irritable toward each other b/c small children are a lot of work, especially when you are working or going to school.
You need to have a heart to heart with him and tell him how you are feeling about things and see where it goes and hopefully he can open up too.
Good luck