Had sex on more than one date? Compare each encounter with a pregnancy test date and see when 21 days have passed, without needing to know when you ovulated.
Follow your test instructions. Severe one-sided pelvic pain, fainting or heavy bleeding needs urgent medical care, even without a positive test.
How to use
- Enter each date when sex could have led to pregnancy. Add up to 10 dates.
- Choose the date of your pregnancy test and its result, or leave it as a planned test.
- Calculate to compare the timing for each encounter. Later sex has its own testing date.
Can one negative test cover several encounters?
It depends on how long before the test each encounter happened. A test taken 3 weeks after one encounter may be too early for a more recent one. Sex after the test is not assessed by that result. A positive result cannot tell you which encounter led to pregnancy.
Methodology
The tool adds 21 calendar days to each sex date and counts how many days passed before the selected test date. Planned Parenthood recommends testing 3 weeks after sex when periods are irregular or absent; NHS guidance uses the same interval when the next period is unknown. A missed period is also a reason to test. No ovulation date, pregnancy probability or test-sensitivity percentage is inferred.