Our free Ovulation Calendar helps you predict your most fertile time of the month (ovulation) so that you can achieve pregnancy. Enter your menstrual cycle information (the start date of your last menstrual period, your menstrual period length and your luteal phase length). Then simply click on "View Calendar" to view your personal ovulation calendar.
If you don't know the length of your menstrual cycle or your luteal phase, you can leave these at their default values (menstrual cycle: 28 days, luteal phase: 14 days). It is recommended though, that you record these, as they will help you to more accurately predict your likely ovulatory date.
If you have a gender preference, simply select boy or girl from the gender field.
It should be noted that the ovulation calendar works best for women with a regular menstrual cycle. We are working on adding other NFP fertility indicators to our program, such as basal body temperature charting, and cervical mucus and cervical position observation so that women with an irregular menstrual cycle can also benefit from this site.
In the mean time, we have already written articles about these methods of fertility prediction:
Basal Body Temperature
During ovulation your body temperature raises to create a more fertile environment for the egg (due to increased levels of the hormone progesterone). Tracking this temperature rise can help you learn more about your cycle. Full Article
During your menstrual cycle, there is a change in the position and feel of the cervix (located at the lower part of the uterus) which can be measured and charted. Full article
Due to changing estrogen hormone levels throughout your cycle, the volume and texture of your cervical mucus undergoes several recognizable changes. By recognizing these, ovulation can be accurately predicted. Full article