Didn't you just give birth? Why are you paying "everything" right now? Don't you think you might deserve something better than a husband that tries to cheat to get out of supporting his first child, and now happily lets his wife shoulder the burden of all the bills, while at the same time providing him with his second child (sorry I didn't say first daughter, as clearly you try to make your child more important than his "first" son).
Seriously, get some self respect, and kick that husband of yours in the arse. Stop paying his bills and sock as much as you can away, because you are going to end up supporting your daughter on your own. Oh, wait, that is what you already do.