Struggling with irregular periods, painful cramps, or fertility concerns? You’re not alone. Understanding the phases of the menstrual cycle is key to taking control of your reproductive health, yet many women go through their cycles without fully grasping what’s happening in their bodies.
The phases of the menstrual cycle influence ovulation, hormone levels, and your ability to conceive. Each brings hormonal shifts that affect everything from your energy levels to your skin, sleep, and fertility.
Phase 1: Menstrual Phase
During the first week of the cycle, the uterus sheds its lining–a combination of blood, mucus and tissues–also known as your period. Because the egg wasn’t fertilized during the previous cycle, the lining is no longer needed and the body gets rid of it. Symptoms can vary significantly, but many women experience cramping, mood changes, and fatigue. During this phase, hormone levels are at their lowest. Fertility is also at its lowest, making it a less than ideal time to try and conceive.
Phase 2: Follicular Phase
The follicular phase overlaps with the menstrual phase, and can begin during day 1-13 of your cycle. Typically, it starts around the same time as the first day of your period and will continue through ovulation. The hypothalamus signals your pituitary gland to start this phase, when hormone levels begin to rise, including estrogen and the follicle-stimulating hormone (FSH). Your body will create several follicle sacs that each contain an immature egg. Only the healthiest egg matures and the body absorbs the rest. The uterus also begins to prepare for the newly matured egg by thickening its lining.
Women often experience an increase in energy levels and mood, and their skin can become clearer after experiencing breakouts during the menstrual phase. For women hoping to conceive, the follicular phase is a bit early since the egg is growing and maturing and not quite ready for fertilization. However, experiencing the signs and symptoms of this phase can be a good sign that the fertile window is coming soon.
Phase 3: Ovulatory Phase
Typically, the fertility window (ovulatory phase) takes place around days 14-16 if you have a 28-day cycle. Generally, it happens in the middle of your cycle, so the days can vary based on your specific cycle. During this phase, the ovary releases the mature egg and it travels down the fallopian tube to the uterus where it waits to be fertilized. This is the best time to conceive as it is peak fertility for the body. Hormone levels are at their highest, basal body temperature increases, and you can experience a range of symptoms, including increased libido and thicker vaginal discharge. Ovulation only lasts about 24 hours, so it’s crucial to track your cycle accurately if you want to conceive.
Phase 4: Luteal Phase
The luteal phase typically happens around days 15-28, post ovulation. The uterus spends this time preparing for pregnancy, with the body increasing hormone levels. If a fertilized egg implants in the uterus, the body starts producing the hormones that signal a positive pregnancy test. Without fertilization, the body begins decreasing hormone levels, which leads to the uterus shedding its lining, triggering menstruation. Women often experience a variety of symptoms during this phase, commonly known as premenstrual syndrome (PMS).
- Bloating
- Breast swelling, pain, or tenderness
- Mood swings
- Headache
- Reduced libido
- Food cravings
Conceiving during the luteal phase is possible, but depends on factors such as ovulation timing, sperm viability, luteal phase length and a woman’s age. Working with a fertility specialist like Dr. Sanaz Ghazal can help you analyze your specific situation and determine your ability to conceive during this phase.
How to Track Your Cycle for Better Health & Fertility
To conceive, you need to track the phases of your menstrual cycle to better understand when each phase happens. By getting in tune with your cycle, you can better identify the symptoms of each phase, and learn your unique signs of ovulation.
Fertility tracking apps make menstrual cycle and fertility tracking simple, and ovulation predictor kits can be used to pinpoint the best chance for fertilization. However, if you have unexpected symptoms or cycle irregularities, it’s wise to seek medical advice.
Understand Your Phases of Menstrual Cycle
Your menstrual cycle is a powerful indicator of your fertility and overall health. Each phase plays a crucial role in fertility, hormone balance, and overall well-being. By recognizing the unique changes in each phase, you can identify your most fertile days, optimize your chances of conception, and gain deeper insight into your body’s rhythms. If you have concerns about irregular cycles, ovulation timing, or fertility challenges, seeking expert advice can help you navigate your reproductive journey with confidence.
Trying to conceive? Understanding your cycle is the first step. Contact RISE today to discuss fertility tracking and treatment options.

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