Abnormal Vaginal Bleeding: Causes and Concerns - Obstetrics and Gynecology

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Abnormal vaginal bleeding?


Doctor, I apologize for taking up your time, but I would like to ask you a question.
I had sexual intercourse for the first time on May 20, using protection.
The second time, I did not use protection, but I am certain there was no ejaculation inside.
According to my cycle, my period was supposed to arrive on June 6, but today, June 16, it is already ten days late and has not come.
However, after having a bowel movement today and straining my abdomen, I noticed a very small amount of bleeding from my vagina.
After wiping, there was no further bleeding unless I strained again.
Could you please tell me if this indicates pregnancy or if something else is going on?

cc, 10~19 year old female. Ask Date: 2022/06/16

Dr. Chen Zhiyu reply Obstetrics and Gynecology


Regarding your concerns, here is a summary response: If you clearly understand when your expected menstruation should occur and it has been delayed, along with having had unprotected intimate relations previously, it is advisable to take a home pregnancy test promptly or visit a nearby medical facility for testing.
Thank you for your inquiry, and I wish you health and happiness.

Reply Date: 2022/06/16

More Info


Abnormal vaginal bleeding can be a source of significant concern for many women, and understanding its potential causes is crucial for addressing any underlying issues. Based on your description, it seems you are experiencing a delay in your menstrual cycle, followed by a small amount of bleeding after straining during a bowel movement. This situation raises several possibilities that we can explore.

First, it is important to consider the possibility of pregnancy. Since you mentioned having unprotected intercourse, even if there was no ejaculation, there is still a chance of pregnancy. Sperm can be present in pre-ejaculatory fluid, and if ovulation occurred around the time of intercourse, fertilization could have taken place. A missed period is often one of the first signs of pregnancy, and the light bleeding you experienced could be implantation bleeding, which can occur when a fertilized egg attaches to the uterine lining. However, this is typically a light spotting rather than a full flow of blood.

If pregnancy is a concern, the most straightforward way to confirm or rule it out is to take a home pregnancy test. These tests are designed to detect the hormone hCG (human chorionic gonadotropin), which is produced shortly after conception. If the test is positive, it would indicate that you are pregnant, and you should schedule an appointment with your healthcare provider for further evaluation and prenatal care.

On the other hand, if the pregnancy test is negative, there are other potential explanations for your symptoms. Delayed menstruation can be caused by various factors, including stress, hormonal imbalances, significant weight changes, or underlying medical conditions such as polycystic ovary syndrome (PCOS). Stress, in particular, can have a profound impact on the menstrual cycle, leading to missed periods or irregular bleeding.

The light bleeding after straining could also be attributed to a few other factors. It is possible that the pressure from straining during a bowel movement caused minor trauma to the vaginal or cervical area, leading to slight bleeding. This is not uncommon and can happen if there is any irritation or if the vaginal tissues are sensitive. Additionally, conditions such as cervical polyps or infections could also cause abnormal bleeding, although these would typically present with other symptoms as well.

Given the complexity of your symptoms and the potential for various underlying causes, it is advisable to consult with a healthcare provider. They can perform a thorough evaluation, which may include a pelvic exam, ultrasound, or blood tests, to determine the cause of your abnormal bleeding and missed period. It is essential to provide your healthcare provider with a complete history, including any sexual activity, menstrual cycle regularity, and any other symptoms you may be experiencing.

In summary, while the possibility of pregnancy should be considered, there are several other factors that could explain your symptoms. Taking a pregnancy test and consulting with a healthcare provider will help clarify the situation and guide you toward appropriate management. Remember, your health is paramount, and seeking professional advice is the best course of action when faced with abnormal bleeding or changes in your menstrual cycle.

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