I've really "been there and done that". Married 17 1/2 years, four kids, changed countless diapers, been in the delivery room with my wife for all four births, been up in the middle of the night cleaning vomit off the rug, you name it, I've done. (Except for giving birth and nursing, and I don't really have that option.)
Don't contracept. Use NFP, and be generous in giving life.
I'm not using ANY birth control. It strikes me as weird to be married and use birth control. I always thought of BC as something that unmarried couples used to avoid getting pregnant.