Pregnancy Chances: When to Test Again? - Obstetrics and Gynecology

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Probability of Pregnancy


Hello doctor, my last menstrual period was on November 6, and my cycle is typically 30 days.
I visited the doctor and took two doses of medication to induce menstruation, but my period still hasn't arrived.
I had a pregnancy test at the clinic on December 27.
Is there a possibility of being pregnant? Should I take another pregnancy test? Thank you.

Mo Mo, 20~29 year old female. Ask Date: 2024/01/08

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, if you have taken a menstrual induction medication and have not had your period after more than a week, it is advisable to see a gynecologist.
Wishing you good health.

Reply Date: 2024/01/08

More Info


When it comes to understanding pregnancy chances and determining the right time to test again, there are several factors to consider. Based on your situation, it appears that you have not had your menstrual period since November 6, and you took medication to induce menstruation without success. You also mentioned that you had a pregnancy test done on December 27.
First, let's discuss the timing of pregnancy tests. Generally, the best time to take a home pregnancy test is after a missed period. Since your menstrual cycle is typically 30 days, if you have not had your period since November 6, you would expect your next period around December 6. Given that you are now well past that date, it is reasonable to suspect that you might be pregnant, especially since you have not had a menstrual cycle for over a month.

The pregnancy test you took on December 27 is crucial. If it was taken after your missed period, it should provide a reliable result. However, if you took the test too early, it might not have detected the pregnancy hormone (hCG) in your urine, leading to a false negative result. Home pregnancy tests are generally very accurate when used correctly, but they can vary in sensitivity. If the test you used was not very sensitive or if you tested too early, it might be worth testing again.

Given that you have not had your period for an extended period and considering the hormonal medications you took, I would recommend taking another pregnancy test. Ideally, you should use the first morning urine for the most accurate result, as it contains the highest concentration of hCG. If you test again and still receive a negative result but your period does not arrive, it would be advisable to consult with your healthcare provider for further evaluation.

In addition, if you are experiencing any unusual symptoms such as breast tenderness, nausea, or fatigue, these could also indicate pregnancy. However, they can also be side effects of the medications you took or other hormonal changes in your body.

If you continue to have negative pregnancy tests and your period does not come, your doctor may want to investigate further. There could be other reasons for a missed period, such as hormonal imbalances, stress, or other underlying health issues.
In summary, it is advisable to take another pregnancy test, preferably using first morning urine, to confirm whether or not you are pregnant. If the result is still negative and your period does not arrive, please reach out to your healthcare provider for further assessment. They can offer guidance and help determine the next steps based on your individual health situation.

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