Your Cycle Information
Days between periods
Days of bleeding
Your Cycle Today
You are on Day 15 of your cycle (Ovulation Phase)
Period Forecast (Next 12 Cycles)
Wednesday, November 4, 2026
Cycle #1
Wednesday, December 2, 2026
Cycle #2
Wednesday, December 30, 2026
Cycle #3
Wednesday, January 27, 2027
Cycle #4
Wednesday, February 24, 2027
Cycle #5
Wednesday, March 24, 2027
Cycle #6
Wednesday, April 21, 2027
Cycle #7
Wednesday, May 19, 2027
Cycle #8
Wednesday, June 16, 2027
Cycle #9
Wednesday, July 14, 2027
Cycle #10
Wednesday, August 11, 2027
Cycle #11
Wednesday, September 8, 2027
Cycle #12
Based on a 28-day cycle. Actual dates may vary.
Understanding Your Cycle Phases
Menstrual Phase (Days 1-5)
Uterine lining sheds. You may experience cramps, fatigue, and mood changes. Flow is typically heaviest in the first 2-3 days.
Follicular Phase (Days 6-14)
Estrogen rises, energy increases. Follicles develop in ovaries. Many feel their best during this phase.
Ovulation Phase (Days 12-15)
Egg is released. Peak fertility. You may notice increased cervical mucus, mild cramping, and heightened senses.
Luteal Phase (Days 16-28)
Progesterone rises. PMS symptoms may occur: bloating, mood swings, breast tenderness. Body prepares for period or pregnancy.
Managing Period Symptoms
For Cramps
- • Heat pads or warm baths
- • Light exercise (walking, yoga)
- • Over-the-counter pain relievers
- • Stay hydrated
For PMS
- • Reduce salt, caffeine, sugar
- • Regular exercise
- • Get enough sleep
- • Calcium and B6 supplements
When to See a Doctor
- • Periods lasting longer than 7 days
- • Soaking through protection every hour
- • Severe pain that interferes with daily life
- • Cycles shorter than 21 or longer than 35 days
- • Missed periods (if not pregnant)
- • Bleeding between periods
Your Next Period
Next Period
Wed, Nov 4
in 14 days
Current Phase
Ovulation Phase
Day 15 of cycle
Cycle Scenarios
Explore how changes affect your results
Ovulation Phase Tips
Based on your results
Current Cycle Phase
You're on day 15 of your 28-day cycle, currently in the ovulation phase. Peak fertility and energy. You may feel more social and confident.
Period Planning
Your next period is expected in 14 days (Wed, Nov 4). Plan accordingly for travel, events, or activities.
Track Your Cycle
Track your cycle for 3+ months to identify patterns. Note symptoms, flow, and mood changes to better predict future cycles.
Frequently Asked Questions
How do I track my menstrual cycle?
Track from the first day of one period to the first day of the next. Record start dates for several months to find your average. Most cycles are 21-35 days, with 28 being average. Apps or calendars help track patterns over time.
Why is my period irregular?
Irregular periods can result from stress, weight changes, excessive exercise, hormonal imbalances (like PCOS), thyroid issues, perimenopause, or starting/stopping birth control. Occasional irregularity is normal, but persistent changes warrant medical consultation.
What is a normal cycle length?
Normal cycles range from 21-35 days. The average is 28 days, but only about 15% of women have exactly 28-day cycles. Variation of a few days between cycles is normal. Consistently short (<21) or long (>35) cycles should be discussed with a healthcare provider.
How long should a period last?
A typical period lasts 3-7 days, with the heaviest flow in the first 2-3 days. Periods shorter than 2 days or longer than 7 days may indicate hormonal imbalances. Heavy bleeding soaking through protection hourly needs medical attention.
What are the phases of the menstrual cycle?
The cycle has 4 phases: 1) Menstrual (days 1-5): bleeding occurs. 2) Follicular (days 1-13): egg develops. 3) Ovulation (day 14): egg released. 4) Luteal (days 15-28): body prepares for potential pregnancy or next period.
How this works
Forward-projects period start and fertile window from your cycle length and last period start date.
What this tool can’t do
When to consult a professional
Talk to a licensed healthcare provider before using the output of this tool to make a medical decision, especially if you have an underlying condition, are pregnant, or are on medication that affects metabolism or fluid balance.
Sources
- [1]Centers for Disease Control and Prevention (CDC)Official sourcecdc.govAccessed Apr 21, 2026
- [2]National Institutes of Health (NIH)Official sourcenih.govAccessed Apr 21, 2026
Full-stack software engineer specializing in embedded systems, web architecture, and AI/ML. Founder of Practical Web Tools. Built the gesture-controlled drone IP acquired by KD Interactive (Aura Drone, sold on Amazon).