So does this mean that to be a good Catholic ya gotta have a dozen or so kids wether or not you can afford to care for them properly?
No!
Now do your homework. There's plenty of information posted to this thread by other freepers.
You don't have to have that many kids, but if there has to be an openness to God's right to create life, which He generously shares with man.
God doesn't need a single act of intercourse to create human life. He can create it out of dust. Our participation in the creation of life is a great privelege. Using contraception is the equivalent of telling God, "We'll let YOU create life when WE'RE good and ready!"