The four phases of your menstrual cycle, explained simply

Your menstrual cycle is more than "the days you bleed". It's a monthly rhythm of hormones that shapes your energy, mood, sleep, skin, and even how your body responds to food and exercise.

Understanding the four phases makes tracking feel less like a chore — and helps you plan your life around your body instead of against it.

A "textbook" cycle is 28 days, but current international guidance (FIGO) considers anywhere from 24 to 38 days normal for adults (older guidance said 21–35). The four phases below scale up or down with your cycle length.

Phase 1 — Menstrual phase (Days 1–5)

What's happening: Since you didn't get pregnant last cycle, both estrogen and progesterone drop. This drop causes your uterus lining (endometrium) to shed — that's your period.

How you may feel: Low energy for the first 1–2 days, then often a lift as bleeding tapers. Some women feel emotionally clearer once bleeding starts.

What helps:

• Rest more the first two days
• Iron-rich foods (dal, spinach, chicken, dates) to replace what you lose
• Gentle movement — walking, yoga
• Heat for cramps

Phase 2 — Follicular phase (Days 1–13, overlaps with period)

What's happening: Your pituitary gland releases FSH (follicle-stimulating hormone) which tells your ovaries to grow tiny sacs called follicles. Each follicle holds one egg. Usually one follicle "wins" and matures fully. Estrogen rises steadily during this phase.

How you may feel: Energy climbs. Mood lifts. Skin often looks clearer. Many women feel like their "best self" in this phase.

What helps:

• Great time for harder workouts, new projects, social plans
• Higher-intensity exercise pays off — your body handles it well now
• Continue tracking cervical mucus if you're planning or avoiding pregnancy

Phase 3 — Ovulation (around Day 14 in a 28-day cycle)

What's happening: A surge in LH (luteinising hormone) triggers the mature follicle to release its egg. The egg travels down the fallopian tube (the narrow tube connecting the ovary to the uterus). It lives about 12–24 hours.

How you may feel: Peak energy. Higher sex drive. Some women feel a brief sharp pain on one side (called mittelschmerz, German for "middle pain"). Cervical mucus becomes clear and stretchy — like raw egg white.

How to know your ovulation day: "Around day 14" is just an average. Actual timing varies by 3–5 days for many women. Tracking cervical mucus, basal body temperature, or using an LH test kit (available at chemist shops in India) tells you when yours happens.

What helps:

• Best window for pregnancy is the 5 days before ovulation + the day of
• If you don't want to get pregnant, this is the time to be extra careful with contraception
• Sleep may be lighter — keep bedtime consistent

Phase 4 — Luteal phase (Days 15–28)

What's happening: The empty follicle (now called the corpus luteum) starts producing progesterone. This hormone prepares your uterus for a possible pregnancy. If no pregnancy occurs, progesterone drops again — and you're back to Phase 1.

How you may feel: Energy dips in the second half. You may feel more introverted, tired, or emotional. Bloating, food cravings, and acne can appear in the last few days. This is when PMS shows up.

What helps:

• Prioritise sleep — your body needs more
• Swap intense workouts for walking, pilates, or yoga if energy is low
• Eat regular meals with protein — helps stabilise mood and reduce cravings
• Cut back on caffeine and alcohol in the last 5 days
• Say no to social plans that feel like too much — it's okay

What if my cycle isn't 28 days?

Perfectly normal. Most of the variation happens in the follicular phase (Phase 2). The luteal phase (Phase 4) is usually 11–17 days and is relatively stable — less variable than the follicular phase, though it isn't completely fixed. So a 32-day cycle usually means ovulation around Day 18, not Day 14.

Tracking a few cycles reveals your personal pattern — and MyPariva's predictions get more accurate as you log more data.

When something isn't right

Talk to a gynaecologist if:

• Your cycle is consistently shorter than 24 or longer than 38 days
• You skip periods for 3+ months (and aren't pregnant)
• Bleeding lasts more than 7 days or is very heavy
• You bleed between periods