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Why Is It Important To Know About Your Luteal Phase?

06.26.2023 / The Oova Team
Why Is It Important To Know About Your Luteal Phase?

The menstrual cycle has four phases, and each one plays a role in your reproductive and overall health. The luteal phase, the phase right before your period, plays a pivotal role in preparing the body for potential pregnancy and maintaining the uterine lining. 

Understanding your luteal phase—and specifically its length—can give you insights into your hormones, fertility, and even overall health. In this guide, we’ll cover exactly what happens during the luteal phase, what a short or long luteal phase means and how it can impact your health. We’ll also teach you how to track your luteal phase, so you can get a clear understanding of what’s happening in your body and take control of your reproductive journey.

What is the luteal phase?

First off: what’s going on in your body during the luteal phase? The luteal phase is a crucial part of the menstrual cycle that occurs after ovulation. The phase is named after the corpus luteum, a temporary gland formed within the ovary after the release of an egg. The luteal phase typically spans from the day after ovulation until the onset of the next menstrual period.

During the luteal phase, the body undergoes several intricate hormonal changes. Progesterone levels rise, preparing the uterus for possible implantation of a fertilized egg and supporting early pregnancy if it occurs. Additionally, the body produces estrogen. This hormone helps to thicken the uterine lining, ensuring it is ready to receive a fertilized egg.

If fertilization does not occur, hormone levels eventually decline, leading to the shedding of the uterine lining and the start of a new menstrual cycle.

When is the luteal phase? Timing and length

The luteal phase begins immediately after ovulation. On average, the luteal phase lasts for approximately 10 to 16 days. This duration is considered within the normal range and is essential for maintaining a healthy reproductive cycle.

It’s important to note that luteal phase length can vary slightly from person to person. In most menstrual cycles, the luteal phase remains fairly consistent for an individual.

What is a short luteal phase?

Some individuals may experience a shorter luteal phase, which is defined as a duration of fewer than 10 days. A short luteal phase can sometimes pose challenges for conception and may indicate certain underlying factors that need attention.

A shortened luteal phase can be caused by various factors, including hormonal imbalances, inadequate progesterone production, or issues related to ovulation. It is important to note that experiencing an occasional shorter luteal phase is not uncommon and may not necessarily indicate a problem. However, if consistently experiencing a short luteal phase, it is advisable to consult with a healthcare professional for further evaluation.

What is a long luteal phase?

In a normal menstrual cycle, the length of the luteal phase remains relatively consistent. However, a long luteal phase, also known as a prolonged luteal phase, occurs when the phase extends beyond the typical duration, or over 16 days. 

Several factors can contribute to a long luteal phase, including hormonal imbalances, such as elevated progesterone levels or low levels of luteinizing hormone (LH). Certain medical conditions, such as polycystic ovary syndrome (PCOS) or thyroid disorders, can also impact the length of the luteal phase.

How do you feel in the luteal phase? Symptoms

The luteal phase of the menstrual cycle can bring about various physical and emotional symptoms, including: 

  • Breast tenderness: This can manifest as swelling, soreness, or heightened sensitivity in the breasts.
  • Bloating and water retention: Some individuals may notice abdominal bloating, a feeling of fullness, or mild weight gain during this time.
  • Mood changes: Some people may experience irritability, mood swings, anxiety, or feelings of sadness during this phase. This is often referred to as premenstrual syndrome (PMS).
  • Fatigue: Hormonal shifts, combined with other symptoms like disrupted sleep patterns, may contribute to feelings of tiredness.
  • Food cravings and hunger: It’s common to have cravings for certain foods, particularly those high in carbohydrates. You might also have an increased appetite during the luteal phase. 
  • Acne and skin changes: Hormonal fluctuations can impact the skin during the luteal phase, leading to breakouts, acne flare-ups, or changes in skin texture. (Learn more about cycle syncing your skin care routine.)
  • Headaches or migraines: Hormonal changes can also trigger headaches or migraines. 
  • Changes in libido: Some individuals may experience a decrease or increase in sexual desire.

Remember, while these symptoms are commonly associated with the luteal phase, not everyone will experience them. Severity of symptoms can also vary from cycle to cycle. 

Luteal phase and fertility

The luteal phase is a crucial factor in fertility and the potential for pregnancy, as the body is preparing to support a potential implantation of a fertilized egg. Understanding the relationship between the luteal phase and fertility can help you make informed decisions when trying to conceive.

Can you get pregnant in the luteal phase?

While the most fertile time in a menstrual cycle typically occurs during the follicular phase leading up to ovulation, conception can still happen during the luteal phase if there’s early ovulation or sustained sperm survival.

  • Early ovulation: If ovulation occurs earlier than expected in the menstrual cycle, the luteal phase may still fall within the fertile window. Sperm can survive in the reproductive tract for several days, so if intercourse takes place a few days before ovulation, there is a possibility of conception during the subsequent luteal phase.
  • Sustained sperm survival: Healthy sperm can survive in the reproductive tract for a few days, waiting for the release of the egg. If intercourse occurs prior to ovulation and the egg is released shortly afterward, fertilization can potentially happen during the early stages of the luteal phase.

It's important to note that while conception can occasionally occur in the luteal phase, the most optimal time for fertilization still lies in the days leading up to ovulation. Tracking your menstrual cycle and identifying your fertile days can help maximize the chances of conceiving.

How to calculate luteal phase

Determining the length of your luteal phase is essential for understanding your menstrual cycle and assessing your fertility. While the average duration of the luteal phase is typically 10 to 16 days, individual variations can occur. You can calculate the length of your luteal phase with cycle tracking, basal body temperature, or a hormone tracking device.

Menstrual cycle tracking

The most basic approach to determine the length of your luteal phase is to track your menstrual cycles on a calendar. Start by noting the first day of your menstrual period as Day 1 and continue until the day before your next period begins. Count the number of days between the day of ovulation and the start of your next period to determine the length of your luteal phase.

>>MORE: The Power of Cycle Tracking: Understanding Your Hormones and Taking Action

Keep in mind that your cycle length can change from month to month. While keeping track of your period can give you an idea of your luteal phase, there might be a margin of error if you experience inconsistent or irregular cycles.

Basal body temperature

Basal body temperature charting involves tracking your body temperature each morning before getting out of bed. A slight increase in temperature after ovulation is an indication that ovulation has occurred. The shift in temperature can help you identify the start of your luteal phase.

While basal body temperature is an accessible and low-invasive metric to track, it’s difficult to get consistent readings and your temperature is easily affected by outside factors.

Hormone tracking

Because the luteal phase is characterized by a rise in progesterone, tracking your fertility hormone levels can give a clear, accurate picture of your luteal phase. The Oova kit is an easy, accessible way to track your progesterone and luteinizing hormone levels to understand your menstrual cycle. 



The luteal phase is a crucial component of the menstrual cycle and plays a vital role in reproductive health. Understanding this phase is essential for assessing fertility, identifying potential issues, and optimizing your chances of conception. 

To calculate when your luteal phase is happening and its length, you can pay attention to your symptoms, track your menstrual cycle, or use a hormone tracking kit.

By understanding the importance of the luteal phase, recognizing associated symptoms, and accurately calculating your luteal phase length, you can gain valuable knowledge about your reproductive health and optimize your fertility.

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