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01 April 2025

Is it true that ovulation happens on one side each month?


01 April 2025
Updates

A: It is true that ovulation occurs on one side each month. Normally, a woman has two ovaries, and each month, one egg from the largest follicle will be ready to ovulate and can potentially be fertilized by the male sperm. The egg can ovulate from the same side or alternate between sides. Typically, one egg is released each month, but in some cases, more than one egg may be released.

What is ovulation day?

Ovulation day is one of the natural mechanisms of a woman's body that occurs every month, typically within a 28-35 day cycle, starting from the first day of menstruation. It is one of the crucial times for couples trying to conceive, as pregnancy can occur when the woman's egg is fertilized during ovulation. The egg is released only once per month, and if fertilization happens during this time, the chances of pregnancy are higher.

How does ovulation happen?

Currently, there are applications that can help women calculate their ovulation days, as well as ovulation test devices to improve accuracy before scheduling intimate moments with their partners. However, counting ovulation days does not guarantee pregnancy in one attempt, as there are many other factors involved in conception that can't be predicted with certainty. If you have been trying naturally for more than 6 months without success, it is recommended to consult a doctor for a detailed examination and to plan appropriate treatment.

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The Biological Clock

This tool indicates:

  • Natural conception per month if you have no fertility issues
  • IVF success rate at the same age
  • When to seek help after months of unsuccessful attempts

If you are concerned at any stage – we recommend booking a doctor appointment or a free nurse consultation. The sooner you make a plan the better your chances in the long term.

When to seek advice early

  • If you have polycystic ovaries, endometriosis, or have been through a cancer diagnosis; we recommend you get in touch quickly so we can talk you through all your options and give you the greatest possible chance of success.
  • If you’re a single woman considering motherhood in the future; it’s best to approach us early and consider egg freezing as this can be an option for you while you have a higher ovarian reserve and healthier eggs.
Set your age and the months you’ve been trying to conceive
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Your chance of having a baby per month for fertile couples
Your chance of having a baby per IVF cycle (if experiencing infertility)

Body Mass Index calculator

Being overweight or underweight can reduce fertility, so it is important to keep your body weight within the normal healthy range.

Body Mass Index (BMI) is an indication of your body weight and can be calculated by dividing weight by height. You should aim for a BMI of between 20 and 25, as this will optimise your chances of conception.

Woman’s BMI below 19

Even in these modern times, nature knows best. If a woman's BMI falls below 19, the body senses famine and ovulation is switched off to prevent the risk of having a baby with malnutrition. Excessive exercise can reduce body fat and increase muscle mass to a point where periods cease for the same reason. Risk of miscarriage is also increased in women with a low BMI.

Being underweight

If a woman's BMI falls below 19, the body senses famine and ovulation is switched off to prevent the risk of having a baby with malnutrition. Excessive exercise can reduce body fat and increase muscle mass to a point where periods cease for the same reason. Risk of miscarriage is also increased in women with a low BMI.

BMI’s greater than 30

This can reduce fertility by 50%. Pregnancy for women with a 30+ BMI is often associated with problems such as maternal diabetes, high blood pressure, big babies and increased risk of caesarean section.

Add your height and weight to calculate your BMI