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.
Enter your menstrual cycle information and simply click on "CREATE" to view your
personal ovulation calendar.
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.
Also: Take the Online Pregnancy
Test , create a
Pregnancy Calendar , and Chinese Sex Gender Calendar
Chart
Note : This calendar works best if you have a regular 21 to 35-day
menstrual cycle. This calendar cannot and should not be used for contraception or
to prevent pregnancy.