Menstrual Cycle:

Why understanding your cycle matters The menstrual cycle is a part of your everyday life, affecting everything from energy levels and sex drive to mood and overall health. Understanding the different phases of the menstrual cycle can give you deeper insights into your fertility and help you make informed decisions about your daily activities. The menstrual cycle has four distinct phases: menstruation, the follicular phase, ovulation, and the luteal phase. These phases are characterized by changes in hormone levels, the development of follicles and eggs, and the shedding of the uterine lining.

Here's a more detailed breakdown: 1. Menstruation (the period) (around days 1–5)

  • When: From the start to the end of the period.
  • What: Blood and tissue from the previous cycle’s uterine lining (endometrium) are shed through the cervix and vagina. The endometrium is at its thinnest during this phase. A typical period may last up to 8 days, but on average it’s about 5-6 days.
  • Hormones: Estrogen and progesterone levels are usually at their lowest. This causes the top layers of the lining to break down and leave the body.

2. Follicular phase (around days 1–14)

  • When: From the start of the period until ovulation — it overlaps with menstruation, since the ovaries start preparing the next egg while the old lining is still shedding.
  • What: Multiple follicles (fluid-filled sacs containing eggs) develop in both ovaries. One becomes the dominant follicle, reaching about the size of the button on the front of your jeans. This follicle is the one most likely to release a mature egg at ovulation. Meanwhile, the uterus enters its proliferative stage — “proliferative” means growing quickly — rebuilding and thickening its lining to prepare for a potential pregnancy. For most people, the follicular phase lasts about 10-22 days, but this can vary.
  • Hormones: The pituitary gland, located at the base of the brain, produces follicle-stimulating hormone (FSH), which signals the ovaries to prepare an egg for ovulation. The growing dominant follicle produces increasing estrogen levels, which peak just before ovulation and signal the uterine lining to grow.

3. Ovulation (around day 14)

  • When: Around the middle of the menstrual cycle, or 13 to 15 days before the start of the next period.
  • What: The dominant follicle releases an egg into the fallopian tube.
  • Hormones: A sudden surge in luteinizing hormone (LH) triggers the release of the egg. Estrogen levels drop right after ovulation.

4. Luteal phase (around days 14–28)

  • When: From ovulation until the start of the next period. This phase often lasts about 14 days but can range between 9 and 16 days.
  • What: After ovulation, the empty follicle transforms into the corpus luteum, which produces progesterone and some estrogen to support a potential pregnancy. If no pregnancy occurs, it breaks down after about 9-11 days.
  • Hormones: Progesterone (and, to a lesser extent, estrogen) rises and then falls if pregnancy does not occur. This shift in hormones during the menstrual cycle contributes to typical premenstrual symptoms like mood changes, headaches, acne, bloating, and breast tenderness. When progesterone and estrogen drop, menstruation begins again.

How do you feel during the luteal phase? The luteal phase is the time between ovulation and the start of your next period. Many people experience premenstrual syndrome (PMS) during this phase, which can include a variety of physical and emotional changes:

  • Mood changes, such as irritability, sadness, or anxiety
  • Physical symptoms, like bloating, breast tenderness, mild cramping, and changes in appetite or cravings
  • Fatigue or fluctuating energy levels. Not everyone goes through PMS, and symptoms can vary from person to person. If your symptoms are severe enough to interfere with your daily life, reach out to your healthcare provider.

PMS (premenstrual symptoms): The top PMS symptoms include: Physical experiences

  • Weight gain
  • General swelling
  • Breast tenderness and swelling
  • Digestion changes
  • Constipation or diarrhea
  • Bloating and gassiness
  • Back pain
  • Muscle and joint pain
  • Headaches
  • Dizziness
  • Sweating more than usual
  • Acne or other skin changes
  • Abdominal cramps Emotional experiences
  • Changes in sleep patterns
  • Insomnia
  • Changes in appetite
  • Increased appetite
  • Anxiety
  • Changes in sex drive
  • Depressed mood, feeling low
  • General mood changes
  • Fatigue
  • Anger
  • Irritability
  • Crying more than usual
  • Restlessness
  • Confusion
  • Concentration and memory problems
  • Feeling less confident
  • Sensitivity to light and noise
  • Social isolation You might experience many or none of the symptoms above. Each person is different, but if you do experience some of the above, we’ve put together a list of things that could help you with your PMS symptoms: 1. Eat a well-balanced diet to curb PMS symptoms 2. Work out regularly to prevent PMS symptoms 3. Reduce stress to fight PMS symptoms 4. Try supplements for PMS symptoms 5. Make sure you’re getting enough sleep