Baptists and contraception

It is kind of confusing what Christians nowadays are teaching on "contraception" - whether this is moral or not?
Catholics, officially teach against it and consider it a sin, but hardly a Catholic cares to be concerned about this and plainly ignores what their church is saying. Hypocrisy!
When it comes to Baptists, it's hard to tell what they really think. Jerry Falwell in his 1987 autobiography OKs contraception in order to prevent pregnancy when health or family finances do not allow for another child.
Other Christians say that the birth-control pill has an abortive effect. However, those Christians who claim that fail to give evidence and they also fail to present an alternative.
This is weird: We talk about abstinence before marriage and staying pure and that's good. But what about the Christian couple that knows that there's a 50% risk for some serious health condition in any of their children or even a more severe situation. What does the Bible teach on that? Should couples simply abstain from sexual intimacy during marriage or is it right to use contraceptive means?