Well that may be true for you, but believe it or not, some Christians don't want children (I do). I'm so sorry for the trouble you and your wife are having, but we shouldn't make this such an issue for everyone.
What are we going to accomplish through this thread? Is there going to be a final verdict that we can or cannot use contraceptions? No, of course not. It's going to end up like most threads with the moderator ending it and everyone staying on their own sides.
Titus 3:9
But avoid foolish controversies, genealogies, dissensions, and quarrels about the law, for they are unprofitable and worthless.