Abnormal Bleeding: Possible Causes and Concerns - Obstetrics and Gynecology

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Abnormal bleeding


Hello Doctor: My last menstrual cycle was from November 7 to November 12.
After my period ended, I had sexual intercourse three times, two of which were unprotected with withdrawal (on November 15 and November 17), and one was protected (on November 20).
Around November 18, I noticed light pink discharge, and in the early morning of November 22, I experienced bleeding (about the size of a 50-cent coin).
I thought my period was about to start again, but from the afternoon to the evening of November 22, I had reddish discharge, and the amount was not insignificant.
Normally, ovulation should occur after November 21, right? I'm not sure what could be causing this abnormal bleeding.
I would like to ask the doctor if it could be early pregnancy bleeding, or if there might be some uterine pathology involved.
Thank you!

Ann, 20~29 year old female. Ask Date: 2021/11/22

Dr. Chen Zhiyu reply Obstetrics and Gynecology


Regarding your concerns, here is a response: In a typical menstrual cycle of 28 days, the period around November 21 is indeed close to the physiological ovulation period.
It is not uncommon to experience a small amount of bleeding during this time, which can be considered normal.
However, if the bleeding is similar in volume to menstrual flow, it is advisable to undergo a pelvic examination to confirm the diagnosis.
Thank you for your inquiry, and I wish you health and happiness.

Reply Date: 2021/11/22

More Info


Abnormal bleeding can be a source of significant concern for many women, and understanding the potential causes is crucial for addressing any underlying issues. Based on your description, it seems that you are experiencing bleeding that is not typical for your menstrual cycle, which can be alarming. Let's explore the possible causes of your symptoms and what steps you might consider taking.

Firstly, it is important to note that abnormal bleeding can occur for a variety of reasons, and it is not uncommon for women to experience some irregularities in their menstrual cycles. In your case, the timing of the bleeding you experienced after your last menstrual period (which ended on November 12) and the sexual activity that followed could suggest a few possibilities.

1. Ovulation Bleeding: One common cause of mid-cycle bleeding is ovulation bleeding, which can occur when the ovary releases an egg. This typically happens around the middle of your cycle, which for you would be around November 21. Some women experience a small amount of bleeding or spotting during ovulation due to hormonal fluctuations and the rupture of the follicle. This bleeding is usually light and short-lived.

2. Implantation Bleeding: Given that you had unprotected sexual intercourse, there is a possibility that the bleeding could be related to implantation if conception occurred. Implantation bleeding can happen when a fertilized egg attaches to the lining of the uterus, typically occurring about 6 to 12 days after conception. This bleeding is usually light and can be pink or brown in color.

3. Hormonal Imbalances: Hormonal fluctuations can also lead to abnormal bleeding. Stress, changes in weight, and lifestyle factors can all impact hormone levels, leading to irregular bleeding patterns. If you have been experiencing significant stress or changes in your routine, this could be a contributing factor.

4. Infections or Other Conditions: Infections of the reproductive tract, such as pelvic inflammatory disease (PID) or sexually transmitted infections (STIs), can also cause abnormal bleeding. Additionally, conditions such as fibroids, polyps, or endometriosis may lead to irregular bleeding. If the bleeding persists or is accompanied by other symptoms (such as pain, fever, or unusual discharge), it is essential to seek medical attention.

5. Pregnancy: As you mentioned, there is a possibility of early pregnancy. If you suspect that you might be pregnant, it would be advisable to take a home pregnancy test. If the test is positive, you should schedule an appointment with your healthcare provider to confirm the pregnancy and discuss any concerns you may have.

Given the complexity of the situation, it is crucial to monitor your symptoms closely. If the bleeding continues, becomes heavier, or is accompanied by severe pain or other concerning symptoms, you should seek medical attention promptly. A healthcare provider can perform a thorough evaluation, including a pelvic exam, ultrasound, or blood tests, to determine the cause of the bleeding and recommend appropriate treatment.

In conclusion, while there are several potential explanations for your abnormal bleeding, it is essential to approach the situation with care. Keeping track of your menstrual cycle, any changes in your body, and any additional symptoms will be helpful for your healthcare provider in diagnosing the issue. Remember, your health is paramount, and seeking professional guidance is always the best course of action when it comes to concerns about abnormal bleeding.

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