Before putting on a condom make sure you chose the right size and that it's not expired. Then, place the condom on the penis and roll it down, leaving a half-inch of space at the tip. To use condoms ...

1. 18 out of 100 women get pregnant every year because they aren't using condoms correctly. You often hear that condoms are up to 98 percent effective, but that's only if you're using them properly.

Male condoms are 98% effective with perfect use and 85% effective with typical use. Female condoms are slightly less effective — 95% with perfect use and 79% typically. People make mistakes with ...