Abnormal Vaginal Bleeding: Causes and Concerns - Obstetrics and Gynecology

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Vaginal bleeding


In August 2023, due to an overseas trip in September, I visited the doctor early to take medication to induce menstruation and also had a Pap smear.
From August 25 to 30, I had my menstrual period (normal flow).
On September 4, the Pap smear results indicated benign inflammation.
From October 3 to 8, I had my menstrual period again (normal flow).
Since September, I have been on vacation, and my routine and eating habits have been irregular, leading to slight weight gain.

On October 18, during the day, I noticed a small amount of brown blood (only appeared once).
In the evening, during intercourse with my husband, I experienced bright red bleeding midway.
Upon observation, it does not seem to be menstrual blood; there was no blood in my urine, and the stool may have caused slight vaginal bleeding due to straining.
I do not have any other discomfort.
I would like to ask the doctor what the possible issue could be.

AL, 30~39 year old female. Ask Date: 2023/10/19

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, it could be ovulatory bleeding; just observe for now.
Wishing you good health.

Reply Date: 2023/10/19

More Info


Abnormal vaginal bleeding can be a concerning symptom for many women, and understanding its potential causes is essential for addressing any underlying issues. Based on your description, it appears that you have experienced a few episodes of unusual bleeding, including a small amount of brownish discharge followed by bright red blood during intercourse. Given that you have had a recent Pap smear that showed benign inflammation and your menstrual cycles have been normal, let's explore some possible explanations for your symptoms.

1. Hormonal Fluctuations: Changes in your lifestyle, such as altered eating habits and weight gain, can lead to hormonal imbalances. Hormones play a crucial role in regulating the menstrual cycle, and fluctuations can result in unexpected bleeding. This is particularly relevant if you have experienced stress or changes in your routine, as these factors can influence hormone levels.

2. Ovulation Bleeding: Some women experience spotting around the time of ovulation, which typically occurs about midway through the menstrual cycle. This bleeding is usually light and can be accompanied by other symptoms such as mild cramping. Given that you mentioned having a regular cycle, this could be a possibility, especially if the bleeding coincides with your ovulation period.

3. Cervical or Vaginal Trauma: The bright red blood you observed during intercourse could be due to minor trauma to the vaginal or cervical tissues. This can happen if there is insufficient lubrication or if there is vigorous activity. If you have had any recent changes in sexual activity or if you are experiencing dryness, this could be a contributing factor.

4. Infection or Inflammation: While your Pap smear indicated benign inflammation, it is still possible to have a localized infection or irritation that could cause bleeding. Conditions such as cervicitis (inflammation of the cervix) or vaginitis (inflammation of the vagina) can lead to abnormal bleeding. If you notice any unusual discharge, odor, or discomfort, it would be prudent to follow up with your healthcare provider.

5. Polyps or Fibroids: Although your recent examinations did not indicate any significant abnormalities, it is worth noting that uterine polyps or fibroids can sometimes cause irregular bleeding. These growths are generally benign but can lead to symptoms like spotting or heavier menstrual bleeding.

6. Other Considerations: If you have recently changed contraceptive methods or started any new medications, this could also influence your bleeding patterns. Certain medications, including hormonal contraceptives, can lead to breakthrough bleeding.

Given these possibilities, it is essential to monitor your symptoms closely. If the bleeding persists, increases in volume, or is accompanied by other symptoms such as pain, fever, or unusual discharge, it is crucial to seek medical attention. A thorough evaluation by a healthcare provider, including a pelvic examination and possibly imaging studies, may be necessary to rule out any serious conditions.

In conclusion, while occasional abnormal bleeding can be benign, it is essential to remain vigilant and proactive about your reproductive health. Keeping a detailed record of your menstrual cycles, any bleeding episodes, and associated symptoms can be helpful for your healthcare provider in diagnosing and managing your condition effectively. Always feel empowered to discuss your concerns with your doctor, as open communication is key to achieving optimal health outcomes.

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