Possible Causes of Yellow Odorous Discharge and Back Pain in Women - Obstetrics and Gynecology

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Yellow discharge with a foul odor and a sour smell, accompanied by lower back pain?


Menstruation occurred from November 19 to November 27.
On November 27, there was unprotected sexual intercourse without ejaculation.
Following that, there was light bleeding for four consecutive days, with a pale brown color.
By December 2, there was yellow discharge that had a foul, sour odor, and there was also lower back pain.
What could be the possible symptoms in this case?

Lin, 10~19 year old female. Ask Date: 2022/12/13

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, it could be inflammation.
I recommend seeing a gynecologist.
Wishing you good health.

Reply Date: 2022/12/13

More Info


The symptoms you are experiencing, including the yellow odorous discharge and back pain, can be indicative of several potential conditions. Given the timeline of your menstrual cycle and the nature of the discharge, it is essential to consider a few possibilities.

1. Infection: The presence of a foul-smelling yellow discharge often suggests a bacterial infection, such as bacterial vaginosis or a sexually transmitted infection (STI) like gonorrhea or chlamydia. Bacterial vaginosis is characterized by an imbalance of normal vaginal flora, leading to an increase in certain bacteria. Symptoms may include a fishy odor, especially after intercourse, and a yellow or gray discharge. STIs can also present with abnormal discharge, often accompanied by other symptoms such as pelvic pain, burning during urination, or itching.

2. Pelvic Inflammatory Disease (PID): If the infection spreads to the reproductive organs, it can cause PID, which may present with lower abdominal pain, back pain, and abnormal discharge. PID can result from untreated STIs and may lead to serious complications if not addressed promptly.

3. Hormonal Imbalance: The irregular bleeding you experienced after your menstrual cycle could be related to hormonal fluctuations. Conditions like polycystic ovary syndrome (PCOS) can lead to irregular periods and abnormal discharge. Hormonal imbalances can also affect the vaginal environment, potentially leading to infections.

4. Cervical Issues: Conditions affecting the cervix, such as cervicitis (inflammation of the cervix), can cause abnormal discharge and may be accompanied by pain. This inflammation can result from infections or irritations.

5. Endometriosis: Although less common, endometriosis can cause pelvic pain and abnormal bleeding. This condition occurs when tissue similar to the lining inside the uterus grows outside the uterus, leading to inflammation and pain.

Given your symptoms, it is crucial to seek medical attention for a thorough evaluation. A healthcare provider may perform a pelvic examination, take samples for laboratory testing, and possibly conduct imaging studies to determine the underlying cause of your symptoms.
In the meantime, it is advisable to avoid any irritants, such as douches or scented products, which can exacerbate vaginal irritation. Maintaining good hygiene and wearing breathable cotton underwear can also help manage symptoms.
If you are experiencing severe pain, fever, or other concerning symptoms, it is essential to seek immediate medical care, as these could indicate a more serious condition requiring prompt treatment.
In summary, the combination of yellow odorous discharge and back pain can be attributed to infections, hormonal imbalances, or other gynecological conditions. A healthcare professional's assessment is vital for accurate diagnosis and appropriate treatment.

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Possible Causes of Yellow Odorous Discharge and Back Pain in Women

Menstruation occurred from November 19 to November 27. On November 27, there was unprotected sexual intercourse without ejaculation. Following that, there was light bleeding for four consecutive days, with a light brown color. By December 2, there was yellow discharge with a foul...


Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, it could be inflammation. I recommend seeing a gynecologist. Wishing you good health.

[Read More] Possible Causes of Yellow Odorous Discharge and Back Pain in Women


Possible Causes of Yellow Odorous Discharge and Back Pain in Women

Menstruation occurred from November 19 to November 27. On November 27, there was unprotected sexual intercourse without ejaculation. Following that, there was light bleeding for four consecutive days, with a faint brown color. By December 2, yellow discharge appeared, which had a...


Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, it could be inflammation. I recommend seeing a gynecologist. Wishing you good health.

[Read More] Possible Causes of Yellow Odorous Discharge and Back Pain in Women


Possible Causes of Yellow Odorous Discharge and Back Pain in Women

Menstruation occurred from November 19 to November 27. On November 27, there was unprotected intercourse without ejaculation. Following that, there was light bleeding for four consecutive days, with a faint brown color. By December 2, yellow discharge appeared, which had a foul, ...


Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, it could be inflammation. I recommend seeing a gynecologist. Wishing you good health.

[Read More] Possible Causes of Yellow Odorous Discharge and Back Pain in Women


Possible Causes of Yellow Odorous Discharge and Back Pain in Women

Menstruation occurred from November 19 to November 27. On November 27, there was unprotected sexual intercourse without ejaculation. Following that, there was light bleeding for four consecutive days, with a faint brown color. By December 2, yellow discharge appeared, which had a...


Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, it could be inflammation. I recommend seeing a gynecologist. Wishing you good health.

[Read More] Possible Causes of Yellow Odorous Discharge and Back Pain in Women


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