Ovulation Calendar and Fertility Charting

The Ovulation Calendar Method predicts ovulation by looking at a woman's menstrual history - recognizing calendrical patterns and isolating the most fertile times for conceiving a baby. Fertility charting combines the calendar method with other methods of ovulation and fertility prediction.

The Ovulation Calendar and Fertility Charting

The Ovulation Calendar Method allows you to chart fertility and determine when ovulation takes place in your cycle. The calendar method involves keeping a written record of the history of your menstrual cycles - which yields your unique 'fertility statistics' (including trends that may indicate irregularities).

Our Ovulation Calculator operates on the same principle, predicting ovulation by factoring the first day of your last menstrual cycle, the average length of your cycles, as well as the duration of your luteal phase. Maintaining a written ovulation calendar allows you to monitor these useful 'fertility statistics' - and determine irregularities or unique trends in your cycle.

The calendar method is designed to predict general trends in fertility 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.

 *Click here to use our online ovulation calendar.

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 to Chart your Ovulation Calendar

The day menstrual flow begins is 'Day One'. Circle this date on your calendar or chart 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 in your cycle.

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 - and frequency of intercourse should increase as the duration of this fertile period will extend approximately 5 days or more.

While the calendar method is helpful in predicting fertility, it is not extremely precise and does not account for cycle irregularities. Here, fertility charting augments the calendar method by taking into account several other methods of prediction ovulation - from monitoring changes in body temperature to ovulation testing using home predictor kits.

Ovulation Calendar

Fertility Charting and Ovulation Prediction

Fertility charting unifies several methods of ovulation prediction to help focus in and pinpoint your most fertile times. Because it combines complementary methods, a fertility chart allows you to better understand the unique dynamic of your menstrual cycle and time intercourse with increasing accuracy.

Fertility charting unites calendrical recording of cycle days with monitoring other physiological symptoms, as well as BBT charting, cervix and cervical mucus observations, and ovulation testing.

By charting all these variables - and looking at patterns and relationships - you will be able to determine your most fertile time for conceiving a baby with increasing accuracy. To look at each of these variables (or fertility prediction methods) in detail, click on the links below (and download a fertility chart).

> Read More about Fertility Charting and Download a Fertility Chart
> Learn About the Pre-Pregnancy Check-Up

*Click here to use our online ovulation calendar.

Comments

start day of monthly period is 1st april 2012 and end day of my period on 3rd april 2012.
we had inter course on 5th april 2012.
now i am pregnant for 7.5 weeks .boy or gal for me now?

I started my period March 17th and was sexually active March 26th. I am pretty sure I ovulated either Mrach 31st or April 1st and due for my next period in a few days. I am cramping lightly on and off like I am about to start but also have white mucus showing up on and off too. I felt a very strange pain that lasted for less than a minute yesterday afternoon on the right side of my uterus. I am not having the normal PMS symptoms I usually do and dont want to assume it's pregnancy just yet. Here are more symptoms I have had that arent normal for a week after ovulation: mild cramping on and off, mucus that is sometimes clear and sometimes white but doesn't have an odor, I feel hot on and off, headaches, extreme exhaustion, I have more montgomery glands but my areolas dont appear dark yet, and a strange bubbly fluttering feeling in my pelvic regions and chest. Any guess as to what this is? Maybe just a new onset of PMS symptoms?

I started my period March 17th and was sexually active March 26th. I am pretty sure I ovulated either Mrach 31st or April 1st and due for my next period in a few days. I am cramping lightly on and off like I am about to start but also have white mucus showing up on and off too. I felt a very strange pain that lasted for less than a minute yesterday afternoon on the right side of my uterus. I am not having the normal PMS symptoms I usually do and dont want to assume it's pregnancy just yet. Here are more symptoms I have had that arent normal for a week after ovulation: mild cramping on and off, mucus that is sometimes clear and sometimes white but doesn't have an odor, I feel hot on and off, headaches, extreme exhaustion, I have more montgomery glands but my areolas dont appear dark yet, and a strange bubbly fluttering feeling in my pelvic regions and chest. Any guess as to what this is? Maybe just a new onset of PMS symptoms?

My last period is 23rd of feb 2012, how can I calculate my ovulation time, so that I can conceive.
How can I calculate the next month to my ovulation. What drug can I buy

My last period is 23rd of feb 2012, how can I calculate my ovulation time, so that I can conceive.
How can I calculate the next month to my ovulation. What drug can I buy

hi, I forgot to note down my last period but i remember it was about two or three weeks ago. i didnt plan it but it happened and we didnt wear protection. Please help me! Its my first time and i'm freaking out! Is it possible that i'm pregnant? What should i do?

my girlfriend had her mensturation 5th february,when is she safe and when is she not safe.thanx

Well, it looks like no one responds to these comments...
Lucia, there are some things that you can do, but firstly I recommend you either pray, or ask a christian to pray for you. A woman in my church has a daughter who was trying to fall pregnant and it wasn't working. My friend prayed for her and shortly after, she conceived. Now she has a healthy little Bub!

Ok.. I took a pregnancy test.. n it came out negative.. my last period was October 11th.. I'm getting all the early signs of pregnancy.. Like tender breasts, gas, and out of breathe.. Like my question is when will it be a good time to take a pregnancy test? I took a ovulation caculator and it said I was 2 weeks and 5 days.. should I get excited or just ignore it... ??

Hi there.Just want to know approximately how long does the pill {yaz} take to get out of your system.Does it depend on the persons body?Trying to conceive,been of the pill for 3 months now.Thanks for the lovely website & good advice always.

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Ovulation Calculator

Format: 11/28/2014
Increase your chances of getting pregnant! Our Ovulation Calculator will help you predict when you ovulate - your prime time for becoming pregnant.

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By TTC veteran and mother of two, Elizabeth Andrews.