🌸 Menstrual Cycle Explorer 🌸

Cycle Length:

Speed:

Quiz Mode

Phase Legend

Menstruation/Follicular

Follicular Phase

Ovulation (1 day)

Luteal Phase

Pre-menstrual Phase

🧠 Quiz Mode

Question

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Your Answers:

Start of Period:

Ovulation Date:

End of Luteal Phase:

Fertile Period Start:

Fertile Period End:

Results

Complete your answers and click "Submit Answers" to see results.

You have 3 tries before the correct answers are revealed.

📅 Date Calculator

Input Known Date

Start of cycle (first day of period)

Ovulation date

Your Cycle Dates

Select a known date and click "Calculate Dates" to see your cycle calendar.

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Navigate months to see future cycles

Hormone Levels Throughout Cycle

🧠 Learning Corner

🌸 Oestrogen

• Rises gradually during follicular phase
• Peaks just BEFORE ovulation (~100 pg/mL)
• Drops at ovulation to ~45 pg/mL
• Small secondary rise in luteal phase (~65 pg/mL)
• Sharp pre-menstrual drop

🟣 Progesterone

• Completely flat during period & follicular (~10 ng/mL)
• Rises dramatically AFTER ovulation
• Broad sustained peak in luteal phase (~95 ng/mL)
• Always higher than oestrogen in luteal phase
• Sharp pre-menstrual drop triggers period

🌱 Cycle Phases

• Menstrual/Follicular: Days 1-5, shedding + development begins
• Follicular: Days 6 to ovulation-1, follicle development
• Ovulation: 1 day only (cycle length - 14), egg release
• Luteal: 14 days after ovulation