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How To Determine Your Fertility Window?

How To Determine Your Fertility Window?

If any woman is trying to get pregnant, then it becomes crucial to comprehend the fertility window; during this time, the chances of conception will increase. Thus, it becomes vital to know that the fertility window varies from person to person and changes monthly. So, here we discover in detail how to calculate the fertility window and the correct time to get intimate to get pregnant. 

But, before that, it is essential to understand the fundamentals of the menstrual cycle. The monthly hormonal cycle prepares the female body for conceiving a child. Usually, the period cycle occurs in 28 days, but it will vary from 21 to 35 days. However, the period cycle will initiate on the first day of the period and end before the next period cycle. During the fertility window, the chances of conception are increased, and it remains for five to six days before ovulation and the day of ovulation itself. 

What is a Fertile Window?

From the ovary, the egg is released during ovulation and travels within the fallopian tube. It will survive in the reproductive system for 12 to 24 hours. The pregnancy will occur if the sperm is fertilized during this time, and if not, then the egg sheds with the uterine lining during menstruation. The probability of getting pregnant increases within 24 hours of ovulation and one day beforehand. Also, the sperm in the female body will survive for five days, which means the old sperm can still fertilize newly ovulated eggs. 

How to Calculate Fertile Window?

Online ovulation calculators will provide effective results if you calculate the fertility window. Still, people have consistently regular cycles, but it is only sometimes correct. So, some of the best approaches to calculate fertile windows.

  • Cervical Mucus Method

The hormonal changes in the period change the amount and consistency of the vaginal mucus. For that, you need to observe your vaginal mucus each day and calculate the result accordingly. When the mucus is heavy, slippery and wet, you are ovulating. It will have the stability of raw egg whites. Also, you should record the vaginal mucus at least one period cycle. 

  • Ovulation Predictor Kits

It is a boon in fertility because it will track the rush in LH or luteinizing hormone before ovulation. Using this kit, you can determine the fertility window and enhance the chance of pregnancy. Ovulation predictor kits are available over the counter from medical stores. Generally, include test strips that will identify LH levels in urine. As LH surge happens 24 to 48 hours before ovulation, a favourable outcome shows the optimal time for pregnancy. If any woman is suffering from irregular periods and has PCOS, then this kit is not reliable. 

  • Calendar Method

Use the calendar approach for determining the length of the menstrual cycle. Each month, record the first day of the period in the period tracking application. However, the number of days between the first day of consecutive periods is the length of the period cycle. The women will ovulate between 12 to 14 days before initiating their period cycle. The fertile window is the five days that lead into the ovulation plus ovulation day and after ovulation. 

  • Basal Body Tempertaure

It is also known as the temperature method, and you should monitor the temperature as early in the morning. You can use a basal body thermometer to go into the mouth on your rectum. A basal thermometer is more sensitive than a regular thermometer as it will measure the body temperature to a tenth degree. A woman's basal body temperature increases the ovulation time (increasing by 0.5 degrees Fahrenheit). If you monitor the temperature leading up to ovulation, you will see a constant increase in the basal body temperature after ovulation. 


Calculating your fertile window will increase your chances of getting pregnant. If you've been trying for some time without success, then it might be the right time to consult a fertility clinic. Find a centre and doctor with experience in fertility, such as Mannat Fertility Clinic. They should offer various services and treatments. You can improve your chances of having a child with the proper treatment and care.

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