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

just wanna ask,4th day of this month march,we make an unprotected sex w/ my girl friend,10 day of the month here first period.she has regular menstrual.did' my girl friend has the possibility to become pregnant?
i need your help...thanks.

i had a n oral sex with my bf, and... no guilt at all. lol Smile

my bf and i planning to have a baby he is australian and he will come and visit me again this 26 is his arrival my period is 19-25 feb he will be here in manila around 26 or 27,.what can u advice to me pra makabuo kami the right date,please???! xcited na po ako maging mommy

is there any possibility of a girl to be pregnant if she had sex with her boyfriend 3 or 4 days after her menstruation?

ask q lang po, i had sex w/ my bf first week of july.. tapos nong pag sex namin, hndi pa po tapos ung menstration q. then after my menstration mga 1week ata un, nagka affair kami ng x-bf q,tpos pnasok po nya lahat skin.. after po non,july 27 nkpag talik aq sa bf q,then nilabas din po nya lahat sa organ q.. after po non, hndi na po aq dinatnan.. posible po bang na buntis aq ng bf q,or ng x-bf q.. pls help nyo po nman aq..

ask lng ako kng my possibility ba na mbuntis ang babae with an irregular period if she had sex the next after her period?

tanong lng po ako kng mbubuntis ba ang babae kng nkipagsex xa the day after matapos ang period nya...kunwari ngkaperiod xa from nov17-21..then the next day they got sex..irregular ung period ng babae...i dont know how to answer the question of my friend...help me pls..tnx!

tanung lang..panu kung pinasok lng ung male organ dun sa female organ na may konting orgasms ..pero di nagclimax..my possiblity ba na mabuntis ung girl??

just wanna ask....my menstruation ends 9....if i have sex on the day of 14 will i get pregnant??am i safe?

ask ko poh my cycle was started nov.25 and end nov,30.if makipagsex po ko this dec.15 safe po ba???

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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.