On the next page, we'll show you how to pinpoint your fertile days.

Some couples find that they have been missing the most fertile days when trying to become pregnant.

By the late 1960s, the rules for identifying fertile days had been established and teaching centers began to be set up around the world.

Based on experience, my own likelihood is 100 percent on the most fertile day.

Cows are at their most fertile between 60 and 80 days after calving.

The computer can tell you when your most fertile days are.

The chance of becoming pregnant on a woman's most fertile day is at most about 25 percent.

This calculator helps you predict your most fertile days of the month.

Your most fertile days for the next three cycles are:

Some couples find that they have been missing their most fertile days when trying to conceive.