⚠️ Note:
This calculator is for informational purposes only and does not provide medical diagnosis.
It does not guarantee pregnancy status and should be confirmed through a medical test.
If you have irregular cycles or certain health conditions, the result may be less accurate.
This tool is designed for individuals in their reproductive age.
This tool estimates pregnancy likelihood based on cycle, timing, and contraceptive method.
It's not a diagnostic tool and should be used for reference only.
How does it work?
It estimates ovulation based on the average cycle (around 14 days after period start),
and factors in sperm and egg lifespan, plus contraception effectiveness.
When the likelihood increases
Intercourse occurred during fertile window without contraception
Experiencing common early pregnancy symptoms
Irregular cycles may reduce accuracy
Key reference assumptions:
- Ovulation assumed 14 days before next period, with ±3 day weight window
- Egg lifespan: up to 2 days
- Sperm lifespan: up to 5 days
Frequently Asked Questions (FAQ)
Q. Can I use this with an irregular cycle?
A. Yes, but accuracy may decrease. Use your average cycle length.
Q. I'm on the pill—can I still have a chance?
A. While effective, missed pills may reduce reliability.
Q. My result says under 10%. Am I safe?
A. A low score doesn't fully rule out possibility. Consider a test if unsure.
Q. Should I visit a doctor based on the result?
A. If your period is delayed and the result is high, see a gynecologist.