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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.

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Comments

hi my last menstrual period end is on july 26,2010...me and my bf had makelove july 28,2010...do i got pregnant??answer me plsss....asap! tnx

Anonymous - Jul 28, 2010
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my last menstrual period was june 16-june21, and we had sex wid my bf june 23? am i safe that day or wil there be a chance of getting pregnant? pls help

Anonymous - Jun 25, 2010
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my last menstrual day nUng may25.my bf and i was intercourse Nung june 14am hindi nYa winidraw at wala kame ginam8 n contracptve .do u tihink malakas ang chance na mabuntis ako?..help me pls.!!!

aiza - Jun 16, 2010
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is there anyway to know the odds of becoming pregnant in july, my bf is out of town for a couple months but we are seeking pregnancy....i had my last period june 6-june11...he will be here from july 2-july18....any suggestions please help Smile

Anonymous - Jun 12, 2010
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my menstruation is irregular, my first day of my last menstruation is on april 17, 2010, my bf and I got sex on april 23 or 24 2010, 1 time only, until now i have no mestruation(june 4, 2010) am I pregnant?, I am so very concious bout what happen, my bf said that he widraw, and im on not in fertile, am I pregnant?, pls help me in my condition,

thingking girl - Jun 03, 2010
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i ned ur help bcause mine and my bf make love last march 28 he did in inner,,.din my menstrual period end last march 27..it is possible that i wl be pregnant or not..bt my menstrual period was regularly evry 25 to 27 of the month,,.. i ned ur advice if what is the safe date that i will not pregnant?? thanks asap plz..

jm - May 15, 2010
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my bf nd i made love last sunday, april 18, im expecting my menstrual period this tuesday but i didn't had 8 yet... i started taking oral contraceptive pills saturday b4 we made love... im just worried for the possibilities that i may be pregnant. the day 1 of my last menstrual pd was march 2o... pls kindly clarify me on this manner so as to eliminate my anxiety.. tnx

Anonymous - Apr 20, 2010
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ask ko lang poh if may possibilty mabuntis ang friend ko if nkpagsex xia before xia magkaron ng menstrual cycle

Anonymous - Mar 20, 2010
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im 20yrs. oLd, my Last menstruaL day (day one) was february 6,2010 and we made Love (w/ my boyfriend) on feb. 10 & 24. My menstrual usuaLLy comes evry 28 days so i thought it wouLd come yesterday (march 6) but it wouLdn't.. untiL now...and it reaLLy scared me so much! wouLd you pLease teLL me if im reaLLy fertiLe or not? im counting on you.. tnx!

Anonymous - Mar 06, 2010
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pero nung nararamdaman q n lalabasan ako.ni withdraw ko at pinutok q sa labas..mabubuntis po kay ung gf q...?i need you advice....asap..

jhon cruz - Mar 05, 2010
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First Day of Last Period:
Cycle Length:
Luteal Phase Length:
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.