10 dumb mistakes that can get her pregnant.. [Read]

4. The Mistake: You put the condom on—but don’t leave any space in the tip.

The Potential Damage: If you covered up a faucet with your hand and turned it on full blast, where would the water go? See what we’re sayin’? It’s not rocket science. So leave approximately half an inch at the top of the condom to properly “catch” your sperm, says Herbenick; without this wiggle room, you’re risking breakage.