Where in the Bible does it say all forms of birth control are sin?

Yeah, I know the Pope is supposed to be infallible when speaking on matters of faith. But the fact is they were wrong about an article of faith back when all Popes insisted the Earth was flat. Popes were wrong about another article of faith when they insisted the Earth was the center of the solar system. They were wrong insisting the sun, moon and planets and all the stars were set in a dome above the Earth. So clearly, regardless of what Catholic theology may claim, Popes aren’t infallible.

Are Catholics drawing their “Birth control is sin.” pronouncement from some actual biblical teaching? If so which book, chapter and verse? Or are they just making a statement about what they personally believe to be true, like they were when they preached a flat Earth with the sun and the planets in a dome circling around it?