Possible Causes of Foul-Smelling Yellow Discharge and Back Pain - Obstetrics and Gynecology

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The presence of foul-smelling yellow discharge accompanied by back pain can be indicative of several underlying medical conditions. Given your menstrual history and recent sexual activity, it is essential to consider a few potential causes.

1. Bacterial Vaginosis (BV): This is a common condition caused by an imbalance in the natural bacteria found in the vagina. Symptoms often include a thin, yellow or gray discharge with a strong fishy odor, especially after sexual intercourse. The presence of back pain could be related to pelvic discomfort associated with the infection.

2. Sexually Transmitted Infections (STIs): Infections such as chlamydia or gonorrhea can lead to yellow discharge and may also cause pelvic pain or discomfort. These infections can sometimes present with back pain if they lead to pelvic inflammatory disease (PID), which is a more severe complication.

3. Cervicitis: Inflammation of the cervix can result from infections, including STIs or bacterial infections, leading to abnormal discharge that may have a foul odor. Cervicitis can also cause discomfort and pain in the lower back.

4. Pelvic Inflammatory Disease (PID): This is a serious infection of the female reproductive organs that can occur when sexually transmitted bacteria spread from the vagina to the uterus, fallopian tubes, or ovaries. Symptoms can include foul-smelling discharge, pelvic pain, and back pain.

5. Urinary Tract Infection (UTI): Although typically associated with urinary symptoms, a UTI can sometimes cause pelvic discomfort and may lead to changes in vaginal discharge.

Given these possibilities, it is crucial to seek medical attention promptly. A healthcare provider can perform a pelvic examination, take samples for laboratory testing, and provide an accurate diagnosis. Treatment may involve antibiotics if an infection is confirmed.

In the meantime, avoid using any vaginal douches or irritants, as these can disrupt the natural flora of the vagina and potentially worsen the situation. Maintaining good hygiene and wearing breathable cotton underwear can also help manage symptoms.

If you experience additional symptoms such as fever, severe abdominal pain, or if the discharge worsens, seek immediate medical care. It is essential to address these symptoms early to prevent complications and ensure proper treatment.