Delayed Menstruation: Causes and Pregnancy Concerns - Obstetrics and Gynecology

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Menstruation is delayed by 10 days?


My menstrual cycle has typically been 18 to 22 days.
Last month, my period started on the evening of February 22 and ended on the 26th.
I had unprotected intercourse on the morning of the 28th (no ejaculation, lasted 5 minutes).
In the days leading up to my expected period, I experienced breast tenderness and abdominal bloating, but this time I also had nipple pain.
On March 25 and 26, I purchased pregnancy tests from the pharmacy, and both showed a single line.
On March 27, I visited a gynecologist who performed a urine test and a transvaginal ultrasound; both confirmed that I was not pregnant.
During the ultrasound, the nurse mentioned that there was a small black dot, which is a uterine fibroid (but it is small and not affecting anything).
After researching online, I found that some people said a small black dot could possibly indicate a very early embryo.
The doctor who examined me suggested that my body might have a slower ovulation period, which could explain the delay.
However, I would like to know why there is a delay this time when my cycles have been normal before.
Is there a possibility that I could be pregnant? Would taking medication to induce menstruation be advisable? When can I expect my period to arrive?

Xiao Budian, 20~29 year old female. Ask Date: 2020/03/28

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, the chances of pregnancy should be low.
If your period does not arrive in another week, it is advisable to see a gynecologist.
Wishing you good health.

Reply Date: 2020/03/28

More Info


Understanding delayed menstruation can be a complex issue, especially when considering the possibility of pregnancy. Based on the information you provided, your menstrual cycle has typically ranged from 18 to 22 days, and you experienced your last period from February 22 to February 26. Following this, you had unprotected intercourse on February 28, which raises the question of potential pregnancy.

The symptoms you described, such as breast tenderness and abdominal bloating, are common premenstrual symptoms. However, the pain in your nipples is noteworthy and could indicate hormonal changes, which can occur for various reasons, including stress, hormonal imbalances, or pregnancy. The fact that you took two home pregnancy tests on March 25 and 26, both of which returned negative results, is a strong indicator that you are not pregnant. Additionally, your visit to the gynecologist, where urine tests and a transvaginal ultrasound were performed, confirmed that you are not pregnant. The small black dot noted on the ultrasound, identified as a uterine fibroid, is generally benign and unlikely to affect your menstrual cycle significantly.

The delay in your menstruation could be attributed to several factors. Stress is a common cause of delayed or missed periods, as it can disrupt the hormonal signals that regulate your menstrual cycle. Additionally, changes in weight, exercise habits, or underlying health conditions can also contribute to irregularities in your cycle. Given that your previous cycles were regular, it is possible that this delay is a temporary issue related to one of these factors.

Regarding your concerns about the possibility of being pregnant, it is important to note that the timing of ovulation can vary from cycle to cycle. If you ovulated later than usual, it could explain the delay in your period. However, since you have received negative pregnancy tests and a medical evaluation confirming that you are not pregnant, the likelihood of pregnancy is low.

As for taking medication to induce menstruation, it is generally not recommended without consulting a healthcare provider. Hormonal medications can have side effects and may not address the underlying cause of your delayed period. Instead, it may be more beneficial to monitor your cycle for the next few weeks. If your period does not arrive within a reasonable timeframe, or if you experience other concerning symptoms, it would be wise to follow up with your healthcare provider for further evaluation.

In summary, while the possibility of pregnancy cannot be entirely ruled out without a definitive test, the evidence suggests that you are not pregnant. The delay in your menstruation may be due to stress or other non-pregnancy-related factors. It is advisable to maintain open communication with your healthcare provider, who can offer personalized advice and support based on your specific situation. If your period does not return or if you have additional concerns, seeking further medical advice would be the best course of action.

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