Left Lower Abdominal Pain After Diarrhea and Unprotected Sex

Left lower abdominal pain?

Hello doctor, I have been experiencing diarrhea for three to four days.
Today, I had unprotected sexual intercourse with my boyfriend, and later in the evening, I felt severe pain in my lower left abdomen and have been passing gas frequently.
What could be the cause?

An An, 10~19 year old female. Ask Date: 2019/04/14

Dr. Hong Yuanbin reply Internal Medicine

Hello, based on your description, diarrhea accompanied by left lower abdominal pain is likely acute gastroenteritis, usually caused by consuming contaminated food.
It is recommended to drink plenty of water and rest, as symptoms should gradually improve over the course of 2-3 days.
If symptoms persist, it is advisable to consult a gastroenterologist or a family medicine clinic.
Thank you for your inquiry.

Reply Date: 2019/04/14

More Info

Left lower abdominal pain, especially after experiencing diarrhea and unprotected sexual intercourse, can be attributed to several potential causes. It's essential to consider the interplay between gastrointestinal issues and reproductive health, particularly in women of childbearing age.

Firstly, the diarrhea you experienced for several days could indicate a gastrointestinal infection or irritation, which may lead to inflammation in the abdominal area. This inflammation can sometimes cause referred pain, which might be felt in the lower abdomen. The act of engaging in sexual intercourse, especially if it was vigorous, could exacerbate any existing discomfort or irritation in the abdominal region.

Moreover, the left lower abdominal pain could be related to the reproductive system. In women, the left side of the lower abdomen houses the left ovary and fallopian tube. Conditions such as ovarian cysts, ectopic pregnancy, or even ovulation pain (mittelschmerz) could manifest as pain in this area. Given that you mentioned unprotected sex, it is crucial to consider the possibility of pregnancy, which could lead to various symptoms, including abdominal pain. If there is a chance of pregnancy, a home pregnancy test may be warranted if your period is delayed.

Additionally, the combination of diarrhea and abdominal pain could suggest a gastrointestinal condition such as irritable bowel syndrome (IBS), which can be triggered by stress, dietary changes, or infections. IBS can cause cramping and discomfort in the lower abdomen, often accompanied by changes in bowel habits, such as diarrhea or constipation.

Another possibility to consider is the presence of a urinary tract infection (UTI), which can sometimes present with lower abdominal pain and increased gas or bloating. UTIs can occur after sexual intercourse, particularly if proper hygiene is not maintained. Symptoms may include a burning sensation during urination, frequent urination, and lower abdominal discomfort.

Given your symptoms, it is advisable to monitor the pain and any additional symptoms you may experience. If the pain persists, worsens, or is accompanied by other concerning symptoms such as fever, vomiting, or changes in bowel habits, seeking medical attention is crucial. A healthcare provider may recommend a pelvic exam, ultrasound, or other diagnostic tests to determine the underlying cause of your pain.

In summary, left lower abdominal pain following diarrhea and unprotected sex can stem from various causes, including gastrointestinal issues, reproductive health concerns, or urinary tract infections. It is essential to remain vigilant about your symptoms and consult a healthcare professional if necessary to ensure proper diagnosis and treatment.

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