Ovulation Calculator: Track Your Fertility Window

Ovulation Picture

The first day of your last period

Average cycle length (days)

Your estimated ovulation date

Your estimated fertile window

Learning about ovulation is important if you're planning to start a family, trying to avoid pregnancy, or just curious about how your body works.

We’re here to give you the tools and knowledge to make informed decisions about your reproductive health.

What Is Ovulation?

Ovulation is a key phase of your menstrual cycle, and it plays a crucial role in reproduction.

During ovulation, one of your ovaries releases a mature egg, also known as an ovum. This typically happens around the middle of your menstrual cycle.

Once released, the egg is picked up by the fallopian tube to be fertilized by a sperm, potentially leading to pregnancy.

If the egg isn’t fertilized, it will be shed along with the uterine lining. This shedding is what you experience as your period each month.

When Is My Fertility Window? 

Your fertility window is the time when you’re most likely to get pregnant. It’s typically a few days before your ovulation and the day of ovulation. Here’s a simple breakdown:

Ovulation Day: This is the day the egg is released. It's often the peak of your fertility.

Fertile Window: Usually, this is about 5-6 days before ovulation and the day of ovulation itself.

How Do I Know I’m Ovulating?

Here are some signs:

  1. Change in Cervical Mucus: Around ovulation, your cervical mucus becomes clear and stretchy, similar to egg whites.
  2. Basal Body Temperature (BBT) Shift: Your body temperature will rise slightly after ovulation. You can track this with a special thermometer.
  3. Mild Pain or Cramping: Some women might also feel a slight pain or cramping on one side of their abdomen known as mittelschmerz.
fertile vs non fertile mucus

What Should I Do If I Want to Get Pregnant?

  1. Make sure you’re tracking your cycle and noting down your fertility window.
  2. Maximize your chances by having sex before and during your ovulation day.
  3. Maintain a healthy lifestyle by eating a balanced diet and avoiding smoking and alcohol.

What Should I Do If I Don’t Want to Get Pregnant?

  1. Make sure you’re tracking your cycle and noting down your fertility window.
  2. Use birth control methods. Check out our guide to choosing the best option for you. 
  3. Avoid unprotected sex during your fertile window.

A Final Note

Keep in mind that menstrual cycles can vary widely from one woman to another and even from month to month.

While the average cycle is around 28 days, your cycle might be shorter or longer. It's important to track your own patterns and consult with a healthcare provider for personalized advice.

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illustration of three different women.