Should I Retest for Pregnancy After a Negative Result?

Presentation #135419

Hello, doctor.
I apologize for bothering you, but I have another question.
I took a pregnancy test on Saturday morning, and it showed one line (the control line), indicating that I am not pregnant.
However, it is now Sunday evening, and my period still hasn't arrived.
Should I take another pregnancy test or continue to wait?

Tiāntiān, 10~19 year old female. Ask Date: 2018/05/06

Dr. Huang Jianzhong reply Obstetrics and Gynecology

On Saturday morning (May 5), I took a pregnancy test, and the result showed one line on the control line (C), indicating that I am not pregnant.
However, it is now Sunday evening, and my period still hasn't arrived.
Should I take another pregnancy test or continue to wait? Answer: On April 17, April 24, and May 1, I had unprotected intercourse for a few times, but then used condoms for the rest of the time, with ejaculation outside.
I took a pregnancy test on Saturday morning (May 5), and the result showed one line on the control line (C), indicating that I am not pregnant.
I will take another pregnancy test on May 16.

Reply Date: 2018/05/06

More Info

When it comes to pregnancy testing, timing and the accuracy of the test are crucial factors. Based on your situation, where you tested negative on a pregnancy test on Saturday morning and your period has still not arrived by Sunday evening, it is advisable to consider a few key points before deciding whether to retest.

First, it’s important to understand how pregnancy tests work. Most home pregnancy tests detect the hormone human chorionic gonadotropin (hCG), which is produced shortly after a fertilized egg attaches to the uterine lining. The levels of hCG can vary significantly in early pregnancy, and it typically takes a few days after a missed period for hCG levels to rise enough to be detected by a home test. If you tested too early, it’s possible that the test may not have detected the hormone even if you are pregnant.

Given that you tested negative on Saturday and your period has not started, it would be reasonable to wait a couple of days and then retest. This allows time for hCG levels to increase if you are indeed pregnant. Testing in the morning with the first urine of the day can yield more accurate results, as this urine is typically more concentrated.

Additionally, if your menstrual cycle is usually regular and you’ve missed your period, it’s worth considering other factors that might affect your cycle. Stress, changes in weight, illness, or hormonal imbalances can all lead to a delayed period. If you have experienced any unusual symptoms, such as cramping or breast tenderness, these could also be indicators of pregnancy or other conditions.

If you decide to retest and the result is still negative, and your period does not arrive within a week, it would be advisable to consult with a healthcare provider. They can perform a blood test, which is more sensitive than a home pregnancy test and can provide a definitive answer. Additionally, they can help investigate any underlying issues that may be causing your missed period.

In summary, it is reasonable to retest in a couple of days if your period has not started. Make sure to use the first morning urine for the best accuracy. If the result remains negative and your period does not come, seek medical advice for further evaluation. Remember, your health and well-being are paramount, and a healthcare provider can offer guidance tailored to your specific situation.

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