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

Dr Siri Nallapu

General Practitioner

MBBS
5+ Yrs

Consult Now

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

Book UPT Test (Urine Pregnancy) Test Book Beta HCG Test Test

Answered 08/09/2025

More URINE PREGNANCY TEST (CARD METHOD) Health Queries

View all

My period has been missed since October 4th. We had intercourse on October 1st. My urine test is now positive. Please advise me on which tablet to stop a 20 day pregnancy?

Answered by Apollo Doctors

Is it possible to get pregnant if we had intercourse on the 8th day of my period during a 28 day cycle? I am now 5 days late, and I took a urine pregnancy test when I was 2 days late, which was negative. What are the possibilities of pregnancy at this stage? I am also experiencing PMS like symptoms and white, creamy, non sticky vaginal discharge.

Answered by Apollo Doctors

After how many days of missed periods we get accurate results of pregnancy?

Answered by Apollo Doctors

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.