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Using a Fertility Calendar to Predict Ovulation

Using a Fertility Calendar to Predict Ovulation

The calendar method predicts ovulation by looking at a woman's menstrual history. Ideally, the calendar method should be used in conjunction with other predictive strategies, like observing cervical fluids, changes in the position of the cervix, and BBT charting. Also, the calendar method can be used to determine when a woman should start using ovulation tests - products that detect her "LH Surge".

For a more comprehensive calendar method, consider creating a Fertility Chart: using several predictive methods together to pinpoint your most fertile window for conceiving.

The calendar method is designed to predict general trends based on past menstrual patterns - and is therefore limited in terms of "pinpoint accuracy". The more regular a woman's cycle, the more effective the calendar method is - and perceiving ovulation patterns begins to crystallize after a few months of maintaining records.

With the ovulation calendar method, a written record is kept using a calendar to follow the patterns of each cycle. Each cycle begins with the first day of one's menstrual period and ends with - but does not include - first day of the next (which should be recorded as the first day of the next cycle).

How Chart and Read Your Ovulation Calendar

The day menstrual flow begins is 'Day One'. Circle this date on the calendar and notate as 'Day One'. For each following month, circle Day One and continue this for for at least 7-8 months.

Continue maintaining a record of the number of days in each cycle. When bleeding starts, circle the date on your calendar.

To determine the first day you are likely to ovulate, examine your records from previous months, find the shortest cycle, and subtract 18 from the total number of days.

For example, if your shortest cycle is 28 days long, subtract 18 from 28, which leaves 10. Starting with the date you circled (Day One, the first day of your current cycle) count ahead ten days and draw an O (for 'ovulation') through that second date. This day will be the date you are most likely to become fertile.

Again, the calendar method of ovulation prediction is best used in concert with other methods discussed in the Fertility Charting section - or with ovulation predictor kits.

Download Fertility Chart

Comments

at pahabol lang po..kase po ang tamod, diba maalat? na taste ko siya yesterday mejo tumamis pero yellowish. masama po ba yun?

Mr. K - Oct 07, 2009
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pang ang tamod ba nilunok, nakaka buntis ba? kase po yung gf ko worried po..ako rin po worried kase naka lunok rin ako onte (hinalikan ko siya)

Mr. K - Oct 07, 2009
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bakit po ang lalake ay di nabubuntis?
im confused! kasi ung chan ko lumaki! OMFG!

Anonymous - Oct 07, 2009
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.i got period last aug 30.ends sept 2...
then..we make love on sept 23 and sept 25..
is there any possiblities to become pregnanT???

Anonymous - Sep 26, 2009
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My last mentration was on august 23rd, it lasted 7 days, my cycle is regular. I have unsafe sex last sept. 19 2009, Now were on sept. 23rd already, i don't have it... I'm worried. Is there a possibitlity that i could be pregnant now?

Anonymous - Sep 23, 2009
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i just want to ask. my gf last period is august 3. we had inprotected sex august 30. but now she is 20 days delay, is she pregnant?

Anonymous - Sep 19, 2009
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I had a long period last month, started August 27 and ended on September 9, for a total of 12 whole days. All the charts assume that a person has a regular 7 day period. My ovulation chart on here states that my ovulation day would be the 10th of September, but that is only 1 day after my period stopped. Is there any way that could be possible???

sarah16803 - Sep 16, 2009
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My period was on 20 aug 2009, i had sex on 3-4-6-12 and now am seein my period i my pregnant or what. And now my period just started 15 sept i have 28cycl this but my cycl are irregular

Anonymous - Sep 15, 2009
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i have a regular 21 day cycle we had unprotected sex 11/9 and today my menstrual cycle has started can i get pregnant

Anonymous - Sep 12, 2009
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i just want to ask..the last period of my girlfriend was aug.20 2009..we got sex on sept 11 2009...without any protection..aksidente lng po na hindi ko na withdraw..s der a possiblity dat she will get pregnant?tnx..pls reply asap

Anonymous - Sep 12, 2009
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First Day of Last Period:
Cycle Length:
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Luteal Phase Length:
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Ovulation:
Due Date:
Fetal Age:

Note that you are most likely to get pregnant if you time your lovemaking to occur on the days right before - and on - your ovulation date. Keep in mind that the projected ovulation date above is simply a “best guess” estimate based on your cycle date information. The most accurate way to pinpoint your most fertile time is through the use of urine-based ovulation tests or with a fertility monitor. We have partnered with Early-Pregnancy-Tests.com, the Internet’s leading supplier of preconception products since 2001, to offer low-cost, FDA-approved pregnancy and ovulation tests – with free same-day shipping.

 

Now that you’ve calculated your ovulation date using our ovulation calculator, we have a number of other helpful tools you can use to help increase your chances of conceiving.

 

  • Create your own personalized ovulation calendar! You can even provide an email address so that you receive email alerts of your most fertile days, when you can begin testing for pregnancy, and more.
     

  • Create your own personalized fertility chart! This is a highly accurate way to pinpoint your ovulation date that relies primarily on basal temperature charting. (Visit Early-Pregnancy-Tests.com for an accurate, inexpensive basal thermometer.)
     

  • Connect with others at our online community! If you have questions about trying-to-conceive – or if you just want to vent a bit – we have a wonderful, vibrant community of people who’d just love to hear from you.

Find your most fertile time.
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