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Sex when trying to get pregnant

Lots of factors can influence how likely it is for you or your partner to become pregnant.

Frequent sex is the best way to conceive

Having sex every 2 to 3 days increases your chances of getting pregnant. But this may not always be practical. For example, you or your partner may need to travel for work. In such situations, you may decide to schedule when to have sex together.

No particular sexual positions are proven to increase the chances of becoming pregnant. But any position that allows deeper penetration may help.

Penetrating more deeply helps ensure that sperm enters the vagina. An example of a sexual position that allows for deep penetration is the missionary position.

Ovulation and the best time to have sex

A woman is more likely to get pregnant if she has sex around the time of ovulation. Ovulation is when the ovary releases an egg which can be fertilised. This usually happens 12 to 16 days before a woman's next period.

It can be difficult to know exactly when a woman is ovulating. Sperm can live for up to 7 days in a woman’s body. Even if you have sex days before ovulation, pregnancy is still possible.

Coming off contraceptives to get pregnant

How to predict ovulation

There are signs you can look out for when it comes to predicting ovulation.

Cycle length

Ovulation usually happens 12 to 16 days before your next period. If you have regular periods, you may be able to predict when this is.

Body temperature

Your body temperature usually rises when you ovulate and remains high until your next period.

Take your temperature every morning before getting out of bed. You may notice a pattern. A basal body thermometer may be more accurate. This tracks more subtle changes in your body temperature than a regular thermometer.

Cervical mucus

The fluid from your cervix changes at different times in your cycle. 4 days before ovulation, your fluid becomes wet, slippery and stretchy like egg whites. Once you notice this, you'll know you are in your fertile period.

Ovulation prediction kits

You can buy ovulation prediction kits from the pharmacy. But these can be expensive. They test your urine with the aim of detecting changes in hormone levels that show when your are ovulating.

When to talk to your GP

If you're finding it hard to get pregnant, it may help to get medical advice.

If you are under 35

Talk to your GP if you are healthy and have not become pregnant after 12 months of trying.

If you are over 35

Talk to your GP after 6 months of trying.

Health conditions

If you or your partner have any health conditions, talk to your GP after 6 months of trying. Do this especially if your health condition needs monitoring or drug treatment.

It is a good idea to visit your GP for a check-up before trying to conceive.

Women or people with a cervix should make sure their smear tests are up to date.

Cervical screening - CervicalCheck

More support

How to improve your chances of getting pregnant

Foods to eat while trying to get pregnant

Page last reviewed: 17 January 2026
Next review due: 17 January 2029

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This project has received funding from the Government of Ireland’s Sláintecare Integration Fund 2019 under Grant Agreement Number 8.