- Female
- 33 Years
- 08/09/2025
I have irregular periods and took a urine pregnancy test 21 days after having unprotected sex. What are the chances that this result could be a false negative?
Answered by 1 Apollo Doctors
Taking a urine pregnancy test 21 days after unprotected sex usually gives a reliable result, even if your periods are irregular. The chances of a false negative are low if the test was done correctly with an early morning sample. If your period does not start within a week, you can repeat the urine pregnancy test for confirmation. If irregular cycles continue, a thyroid profile and prolactin test may be advised to check for hormonal causes. A serum Beta HCG test may help confirm the diagnosis of pregnancy.
Dr. Siri Suggests...
Take a UPT Test (Urine Pregnancy) Test or Take a Beta HCG Test Test
Answered 08/09/2025
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Disclaimer: Answers on Apollo 247 are not intended to replace your doctor advice. Always seek help of a professional doctor in case of an medical emergency or ailment.