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Best Time To Get Pregnant

The best time for you to get pregnant is during your fertile window. Your fertile window is a six day period of time, commencing five days before ovulation and including the day you ovulate. This is because sperm can live inside the female body for up to 5 days.

Increasing the frequency of sexual intercourse after your period is a relaxed way to increase your chances of getting pregnant. Scheduling intercourse is not always fun, but it is important to have sex during your fertile window.

Having sexual intercourse regularly (every 1 to 2 days) during your fertile window will give you the best chance of getting pregnant. However, if this is not possible, 2 to 3 times per week is adequate.

However, some couples who want to get pregnant fast do prefer to try and predict when ovulation is taking place.

How to predict ovulation

There are several methods that can be used to predict ovulation:

1. Use an ovulation predictor kit

Using an ovulation prediction kit, also known as an ovulation test, is a simple and inexpensive way to pinpoint your most fertile time of the month in the comfort of your own home. Typically these test kits can detect the surge in Luteinizing Hormone (LH) found a woman's urine 12-24 hours before she ovulates, helping to identify the 2 most fertile days of her cycle. Some of the newer ovulation tests can detect both estrogen and LH and help to identify around 4 fertile days each cycle. However, the estrogen rise is lower and not as specific.

Using an ovulation predictor kit is advantageous because these tests predict ovulation just before it occurs and some additional fertile days.

2. Use a fertility monitor

A fertility monitor aims to help predict more fertile days per cycle than an ovulation test giving couples more opportunity each cycle to get pregnant. They can also do much more than an ovulation test.

Many fertility monitors can track and store your personal information such as; cycle length, ovulation and sexual intercourse dates to improve future ovulation and fertile window prediction, and some even keep a record of your data in case you need to seek medical advice. Fertility monitors work by collecting data on various physiological parameters, some measure hormone levels in the urine, others measure basal body temperature and core body temperature.

Examples include the Clearblue Advanced Fertility Monitor, which tracks both the LH and estrogen levels in urine using test sticks to determine a woman's fertile window and the Lady-Comp Fertility Monitors that measure basal body temperature to determine a woman's fertile window. OvuSense tracks your core body temperature using a vaginal app & sensor to identify your entire fertile window.

Although they are more expensive than ovulation tests, some monitors such as the Daysy Fertility Monitor can help you to plan and prevent pregnancy with 99.4% accuracy, therefore giving you years of usage.

3. Record your basal body temperature

Your basal body temperature is your lowest body temperature in a 24 hour period and is a natural and inexpensive way to estimate the day that you ovulate. It is best to take your temperature as soon as you wake up and monitor your basal body temperature each day throughout your menstrual cycle. You should expect a rise in your basal body temperature of around half a degree when ovulation occurs. If you have a menstrual cycle of on average 28 days, expect to see a rise in temperature around day 14. A limitation of this method is that you may only realise that you have ovulated after it has happened and your fertile window will be over until your next cycle. Use our free basal temperature chart to help you estimate the day that you ovulate.

Fertility monitors such as Daysy, Pearly, Lady-Comp Baby and OvuSense help you to predict your fertile window by applying your personal data to their algorithms, which have thousands of cycle data. 

4. Ovulation calculator

If you have a regular cycle of between 21 and 35 days, use our free online ovulation calculator to estimate your ovulation date and fertile window. It is important to remember that this is only a guide, especially for women with irregular cycles, therefore we recommend using other tracking methods to confirm when and whether you have ovulated each cycle.

5. Test your cervical mucus

Look out for changes in your cervical mucus. This is another natural and inexpensive way to predict ovulation. The probability of conception is highest when your cervical mucus is can be described as slippery and clear, some people describe this as egg white consistency. You may also notice an increase in the volume of cervical mucus during this time.


1. Optimizing Natural Fertility. Fertil Steril 2008;90:S1-6

2. ASRM 2003 Fertility: An Overview. A Guide for Patients.; booklets/infertility.pdf (accessed February 19 2015)

3. (UK). NFPS-401 Cervical Mucus [internet], 2015, available from, (accessed on February 19 2015)

Last Update: 06/01/2018