What Is Ovulation And How Does It Affect Your Fertility?

What is ovulation?

Ovulation is the process in which a mature egg is released from the ovary and travels to the fallopian tubes, where it can be fertilized by a sperm. It occurs about halfway through the menstrual cycle, usually around day 14 in a 28-day cycle, although it can vary depending on each woman’s cycle length.

During this process the woman is more fertile and has a greater chance of conceiving if she has unprotected sex.

How does ovulation occur?

Ovulation is a complex process that involves hormonal interactions and changes in the ovaries and reproductive system. Next, I explain step by step how ovulation happens:

  1. Follicle development: The process begins in the first half of the menstrual cycle. The pituitary gland in the brain releases follicle stimulating hormone (FSH), which stimulates the growth and development of various follicles in the ovaries. Each follicle contains an immature egg.
  2. Estrogen production: Developing follicles release estrogen, a hormone that regulates the uterine lining and prepares the body for a possible pregnancy. As the follicles grow, they produce more estrogen.
  3. Follicle dominance: As the cycle progresses, one of the follicles develops more rapidly than the others and becomes the dominant follicle. This follicle produces significant amounts of estrogen.
  4. Luteinizing hormone (LH) spike: As the dominant follicle grows and releases more estrogen, a rapid increase in luteinizing hormone (LH) occurs in the pituitary gland. This sudden rise in LH is known as the “LH spike.”
  5. Follicle rupture and ovulation: The LH spike triggers the final maturation of the egg within the follicle. This leads to the rupture of the follicle and the release of the mature egg from the ovary in a process called ovulation. The egg is captured by the fimbriae, which are finger-like projections into the nearby fallopian tube.
  6. Egg Journey: Once released, the egg begins to move along the fallopian tube into the uterus. This trip can last several days.
  7. Waiting for fertilization: The egg has a lifespan of about 12 to 24 hours after ovulation. During this time, it can be fertilized by a sperm if they are in the fallopian tube. If fertilization does not occur, the egg disintegrates.
  8. Corpus luteum formation: After ovulation, the follicle that released the egg becomes a structure called the corpus luteum. The corpus luteum produces progesterone, a hormone that maintains the uterine lining and provides a suitable environment for a possible pregnancy.
  9. Decay of the corpus luteum: If fertilization does not occur, the corpus luteum degenerates and decreases the production of progesterone. This causes the uterine lining to droop and initiates menstruation.

This cyclical process is repeated in each menstrual cycle in women of reproductive age, with the aim of allowing fertilization and pregnancy.

Factors Affecting Ovulation

Ovulation can be affected by a variety of factors that can influence the functioning of the reproductive system and hormones. Some of these factors include:

  1. Stress: Chronic stress can interfere with the hormonal balance needed for ovulation, as it can affect the production of hormones such as cortisol and alter the function of the pituitary gland and hypothalamus.
  2. Body weight: Both excess and lack of weight can affect ovulation. Obesity and excessive weight loss can cause hormonal imbalances that affect the regularity of ovulatory cycles.
  3. Intense exercise: Excessive or intense exercise can lead to hormonal changes that affect ovulation. In some cases, athletes or people with intense workouts may experience amenorrhea (absence of menstruation).
  4. Hormonal disorders: Medical conditions such as polycystic ovary syndrome (PCOS) and other hormonal disorders can interfere with normal ovulation.
  5. Diseases: Chronic diseases, infections and other health conditions can have side effects on the reproductive system and hormones, which could influence ovulation.
  6. Lifestyle changes: Significant lifestyle changes, such as alterations in sleep patterns, dietary changes, and frequent travel across different time zones, can affect hormonal rhythms and ovulation.
  7. Medications: Some medications, such as certain antidepressants, blood pressure treatments, and certain medical treatments, can affect hormones and, consequently, ovulation.
  8. Age: Age plays an important role in ovulation. Ovulation may become less regular and less predictable as a woman approaches menopause. Teens who are just starting their menstrual cycles may also experience irregular cycles before their hormonal patterns stabilize.
  9. Changes in routine: Major changes in daily routine, such as night work or shift work, can affect the circadian rhythm and have an impact on hormonal patterns.
  10. Genetic factors: Genetics can also influence the regularity and quality of ovulation in some women.

How to Know When You’re Ovulating

There are several ways to determine when you’re ovulating. Here are some strategies and methods you can use to identify your ovulation days:

  1. Cervical mucosa tracking: During ovulation, the cervical mucus tends to become more transparent, elastic and slippery, similar to raw egg white. You can observe changes in the appearance and texture of your cervical mucus throughout your cycle to identify when you’re close to ovulation.
  2. Basal body temperature tracking: Your basal body temperature (BBT) is the lowest temperature your body reaches at rest during the night. After ovulation, due to the increase in progesterone, TB tends to increase slightly and remains elevated until the next cycle. You can take your temperature every morning when you wake up before you wake up and record it to observe patterns.
  3. Ovulation prediction kits: These kits measure the increase in luteinizing hormone (LH) in the urine, which occurs approximately 24-36 hours before ovulation. When the kit shows an LH spike, you’re likely to ovulate within 24-36 hours.
  4. Calendar and calculations: If you have regular menstrual cycles you can estimate your ovulation days by dividing the length of your cycle by two and subtracting about 14 days. For example, if you have a 28-day cycle, you’ll likely ovulate around day 14.
  5. Ovulatory pain: Some women feel mild pain or cramping on one side of the lower abdomen when they ovulate. This is called “ovulatory pain” and can be a sign that you’re ovulating.
  6. Changes in sex drive: Some women experience an increase in sex drive during ovulation due to hormonal changes.
  7. Tracking apps: There are many mobile apps available that allow you to record your symptoms and cycle data to predict your ovulation days. These apps can be useful for identifying patterns over time.
  8. Ultrasound: In special cases, a healthcare professional may use ultrasound to monitor follicular development and predict ovulation.

Relationship between ovulation and fertility

Ovulation is a key factor in achieving fertility. If you’re looking to conceive, it’s important to have sex during fertile days, which are the days close to ovulation. This maximizes the chances of a sperm fertilizing the egg released during ovulation. If fertilization occurs successfully, the fertilized egg will implant in the uterus and pregnancy will begin.

It is important to note that fertility depends not only on ovulation, but also on sperm quality and other individual factors. If you’re having difficulty conceiving or have concerns about your fertility, it’s important to see a healthcare professional who can provide guidance and support.


Ovulation is a crucial process in a woman’s fertility. Understanding what it is and how it affects your ability to conceive can be critical for those who are planning to have children or simply want to learn more about their menstrual cycle. Remember to pay attention to the signals your body indicates and use the proper methods to determine your fertile days. If you’re having difficulty conceiving or have concerns about your fertility, it’s important to see a healthcare professional who can provide guidance and support.

Press ESC to close