fertility calendar
Fertility Calendar

Fertility Calendar

              The characteristic of women entering to family life has changed greatly over the past few decades. Young women in more developed countries increasingly delay pregnancy. Some of them choose to complete the childbirth in a predictive manner. Couples often visit the specialist for more information on fertility planning. Due to growing health awareness, they often want to create a fertility calendar according to their need. This takes into conception or contraception along with a health check and vaccinations before pregnancy.

         Busier lifestyle commitments often coincide with less frequent sexual intercourse. So, timed intercourse is often used to assist with conception. Women planning pregnancy expect to conceive quickly. As a result, many enter into depression if they fail do so in next 3 to 6 months.

Fertility Awareness

         The fertile window is the time in a woman’s cycle where unprotected intercourse can lead to pregnancy. This period typically lasts 6 days around the day of ovulation, but does vary between women. So correct timing of intercourse is important. You are more likely to conceive if you plan intercourse prior to ovulation. It is also important to know that women who are aware of their ovulatory cycle have more chances to conceive over next 12 months.

      Many mobile phone apps are developed to at help women map their ovulation and set a fertility calendar. These technologies help acheiving successful conception or avoiding pregnancy in young women. These apps usually ask users to input various biological features and set the fertility calendar for women.

Menstrual Calculator

Each month a woman’s body goes through a number of changes. These changes are mostly hormone dependent and they prepare the woman for a possible pregnancy. This series of events in a woman’s body is called the menstrual cycle.

         Menstrual calendar can predict the next ovulation date and menstrual period. It was developed based on the cyclical changes in the menstrual period and fertility. In this woman record her menstrual cycles for family planning. Fertility calendar is most widely used to record personal health information. Before the widespread use of mobile phones and computers menstrual calculator was used by woman. Recently different gadgets with self-tracking tools and technologies has replaced the calculator. People gather various kinds of self-information from this software which make them more popular.

Ovulation day can be more accurately determined by ultrasound scanning. It can be combined occasionally with testing luteinizing hormone or oestrogen level in blood.

Fertility calendar
Fertile days

How do you calculate your fertile days?

            Various fertility indicators and measures are included in these fertility calendar. Some of the biological features are basal body temperature, cervical fluid consistency, cervical position changes, urine LH tests, electronic fertility monitors, and menstrual cycle calendars. These fertility indicators help couples to track menstrual cycles.  You can identify the “fertile window,” when you can achieve or avoid pregnancy. Fertile window is an approximately 6-day-long interval during which intercourse can lead to conception.

      Each individual has a distinct pattern of ovulatory and menstrual cyclic pattern and set of symptoms. Measurement of urinary luteinizing hormone (LH) gives an accurate way to determine ovulation. But it is of great importance to select the appropriate assay. The hormone LH peaks prior to ovulation and is excreted quickly in urine. Checking the presence of LH and its products in urine is an excellent way of detecting ovulation.

Implantation or fertile window calculator

Ovulation occurs approximately 14 days prior to menstruation. The days preceding ovulation are important for female fertility and intercourse during these days can result in pregnancy. These are the potentially fertile days and they last around 5 to 7 days in a menstrual cycle. Since these days are important for fertilisation and implantation this period around ovulation is called the “fertile window.

    One of the markers of fertile window include fertility calendar calculations by previous cycle lengths. In addition, basal body temperature, cervical fluid (mucus), self-palpation of the cervix also can support the calculation. Measurement of reproductive hormones in the urine, including LH and oestrogen or progesterone can add to accuracy.

     There are various fertility applications using different algorithms. Most of these fertility apps are generated from user data. They may ask to feed such as date of last menstrual period and cycle length. Cycle length assumption of a 28-day cycle mark ovulation on day 14. Due to the variability of menstrual cycle length the data obtained from fertility apps may not be reliable. Calendar-based fertility apps if added to biomarkers can give accurate results. LH home kit enables women measurement of the LH surge during women’s cycles and can be used to assess prediction accuracy of calendar apps. These tests adds to accuracy of calendar-based methods for women seeking to become pregnant.

How many days after period are you fertile?

    Fertility awareness-based methods help to plan or prevent pregnancy. They rely on the accurate identification of the fertile days in a woman’s menstrual cycle. After ovulation a woman’s egg can survive up to 24 h and sperm can survive for up to five days in the female reproductive tract. The fertile window is restricted to six days per cycle and the day of ovulation and the five preceding days.

Can I get pregnant 5 days after my period?

        During the average woman’s menstrual cycle there are six days when intercourse can result in pregnancy. This “fertile window” comprises the five days before ovulation and the day of ovulation itself.

        In only about 30% of women is the fertile window is between days 10 and 17. Rest of the women reach their fertile window earlier and or much later. You should know that the timing of their fertile window can be highly unpredictable. Even though your cycles are regular you have a chance of conceiving beyond this window in fertility calendar.

How accurate is the fertility calendar?

   Avoiding sex on specific days of the menstrual cycle remains a method of family planning for many couples worldwide. But you should be aware that no calendar method is completely effective. There are few days in the menstrual cycle during which some women are not potentially capable of becoming pregnant. But prediction of these days is highly unreliable.

    The calendar-based methods can successfully predict the fertile window up to 50% of cases. However, calculating ovulation is highly unreliable. Women following fertility calendar method for contraception often land in an unplanned pregnancy. Indeed, it would only be possible to predict ovulation accurately by giving users an 8–10-day window. This window can be used to plan sexual intercourse,

       The true day of ovulation varies considerably for any given cycle length. Therefore, calendar/app methods are not able to provide women with an accurate prediction of the day of ovulation. Women should be advised to consult fertility specialist for advice on timing of sexual intercourse to achieve pregnancy.

Accurate ovulation calculator

          Natural cycle fertility calendar is a fertility awareness method to understand reproduction. Mobile applications using the fertility calendar method often misguide couple. These apps combined with  a symptom-based algorithm can give better results. In addition to analysing cycle-by-cycle menstruation data, it determines the fertile window based on basal body temperature (BBT) and optional urinary tests of luteinising hormone (LH). The prediction of the fertile window for ovulation day takes into account cycle length, luteal/follicular phase length and average temperature. Ovulation is more confirmatory following detection of the BBT rise.

Advanced ovulation calculator

Here are various calculations for a fertility calendar.

The Ogino method – This assumes a fixed length of the luteal phase of 14 days and predicts the ovulation date. It calculates 15 days after the onset of the previous menstruation for a particular as ovulation date. The Ogino method is the most widespread calendar-based method relied on by women.

 Half cycle length method – This second method is the method proposed by Lamprecht and Grummer-Strawn.  By this method ovulation date is calculated by dividing the cycle length by two. Thus, this method predicts a woman’s next ovulation date as [cycle length/2] days after the onset of the previous menstruation.  This is a simple over other calendar-based methods that reflect individual differences in the length of the luteal phase in a menstrual cycle.

The Optimized method –   This method predicts a woman’s next ovulation date as a function of follicular phase length. The ovulation day is optimized by days after the onset of the previous menstruation. It includes individual variation in menstrual cycle.

Fertile days after period

      Awareness of one’s own fertility is considered important for fertility treatment. It helps women to become pregnant in a shorter period of time. Fertility depends on the menstrual cycle length, and in each cycle, there is a “fertile window”. Calculating this window helps women during which they can conceive. Studies on standard menstrual cycles suggest that the fertile window starts 5 days prior to ovulation and ends on the day of ovulation.

 It is estimated that pregnancy rate starts to increase 8 days prior to ovulation, peaks after 6 days (2 days prior to ovulation), and reaches almost zero at 2-3 days after ovulation. Hence, in order to be aware of the fertility window, it is important for a woman to be able to predict the next ovulation date in the course of her menstrual cycles.

 The present calendar methods of predicting the ovulation date needs more refining. Because calendar methods require only the timing of menstruation, one of the calendar methods would be the best option for couples during the early stages of their attempt to have a baby. It may be less effective for those who want to avoid a pregnancy

     Fertility calendar is a low-cost, low-burden method for achieving pregnancy. Cycle charting, in addition to symptoms may reduce time to pregnancy. Although small reductions in time to pregnancy may not be clinically meaningful, they may help couples to better time pregnancies and reduce anxiety. These advantages make fertility calendar a good option for couples who want to be proactive in fertility planning.

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