Pregnant After Sex
Ever wondered about the chances of getting pregnant after having sex? It's a common question, but the answer isn't a single number—it changes a lot based on a few key factors.
This page has an interactive tool to help you get a personalized estimate. Remember, this is just a rough guide based on scientific data, not a fortune teller! Select the options that best fit your situation to see the result.
Your Personalized Risk Estimate
What birth control method, if any, was used?
How was the method used?
(For example, did the condom break or were any pills missed?)
What is the woman's age?
How many days from the START of your period until the day you had sex?
(Count from the very first day you saw any blood.)
What is your usual menstrual cycle like?
How This Estimate Works (and Its Limits)
This calculator provides an estimate, not a guarantee. It uses a risk model that combines several key factors known to influence the chance of conception. Please keep in mind:
- This is an estimate based on averages from thousands of people. Your individual body and situation may be different.
- The model assumes no underlying fertility issues in either partner (like PCOS or low sperm count).
- Ovulation can vary from cycle to cycle, even for women with regular periods. Stress, illness, and travel can all affect your timing.
See the data page for all of the details on how these risks are calculated.
Initially created by Gemini (Sept. 2025).