Sometimes a woman's temperature does not rise with ovulation, or there are other difficulties with using the basal temperature method of predicting ovulation.

A pregnancy calendar is a fun and informative way to keep track of your pregnancy and ensure a healthy outcome for you and your baby. For most women, pregnancy and birth is one of the key points in life and a pregnancy calendar will help you live the experience to the fullest. Detailed week-by-week information about the bodily changes happening to yourself and your baby, as well as handy advice regarding everything from nutrition to exercise, are just some of the things pregnancy calendars have to offer.

A video covering how to create an ovulation calculator.

An educational video covering ovulation. It covers from from the release of the egg to fertilization or menstruation.

There are two systems used in calculating when a women is about to ovulate. The American System which dates back to early times and the Ovulation System. The Ovulation Calculator is the most accepted and considered the most accurate. The accuracy of this method of course will depend on you. The Ovulation Calculator often helps determine when it is a good time to have sex if you are wanting to conceive in order to have a baby. The most effective way is when a woman becomes fertile.