How it Works

The menstrual cycle has three phases: Follicular, Ovulation, and Luteal. For women with regular cycles, ovulation typically occurs 14 days before the next period starts.

1
Ovulation Day:
The egg is released from the ovary. It survives only 12-24 hours.
2
Fertile Window:
Sperm can settle inside the body for 3-5 days. So, sex up to 5 days before ovulation can lead to pregnancy.
3
Safe Period:
Days outside the fertile window. However, this is NOT a reliable birth control method (failure rates >20%).

Scenarios

👶 Conception

Trying to conceive? Intercourse during the "Fertile Window" (especially the 2 days before ovulation) offers the highest chance of pregnancy.

📝 Period Tracking

Even if not planning a pregnancy, knowing your dates helps predict your next period, manage PMS, and plan your schedule.

FAQ

Is this accurate for irregular periods? ▼

No. Calendar methods are inaccurate for irregular cycles. We recommend using Ovulation Predictor Kits (OPKs) or tracking Basal Body Temperature (BBT) for better accuracy.

What are the signs of ovulation? ▼

Signs include: slippery "egg white" cervical mucus, mild pelvic pain (Mittelschmerz), increased sex drive, and a slight rise in body temperature after ovulation.

Can I use this for birth control? ▼

NO! The "Rhythm Method" is unreliable. Sperm can survive for days, and ovulation can shift unexpectedly due to stress or illness. Use condoms or other effective contraception.

When should I use an ovulation test? ▼

Start testing a few days before your estimated fertile window begins. Test at the same time each day (afternoons are often best).

How is cycle length calculated? ▼

Count from the first day of your period (full flow) up to the day BEFORE your next period starts. The average is 28 days.

What is the Luteal Phase? ▼

The time from ovulation to your next period. It is usually consistent (around 14 days) in most women, even if the follicular phase (before ovulation) varies.

Which day has the highest pregnancy chance? ▼

Typically the day BEFORE ovulation and the day OF ovulation.

Understanding "Spotting" ▼

Light bleeding mid-cycle can be "ovulation spotting" and is usually normal. Heavy bleeding or pain should be checked by a doctor.