Lower Abdominal Pain After Unprotected Intercourse and Emergency Contraception - Obstetrics and Gynecology

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Lower abdominal pain?


Hello, my period was originally due on March 8.
I had unprotected intercourse with my boyfriend during the fertile window on February 19 and February 23, but we used condoms the entire time.
After that, I checked and my period didn't come, so I took four pregnancy tests, all of which were negative.
On March 11, we had intercourse again, also using condoms.
Because I was worried, I bought emergency contraception (Ella) and took it.
After that, I noticed some vaginal bleeding and experienced pain in my lower left abdomen.
What could be happening?

Niming, 10~19 year old female. Ask Date: 2017/03/12

Dr. Huang Jianzhong reply Obstetrics and Gynecology


Your period was originally expected on March 8.
You had unprotected intercourse with your boyfriend during the fertile window on February 19 and February 23, but you used condoms throughout.
After your period did not arrive, you took four pregnancy tests, all of which were negative.
On March 11, you had intercourse again, also using condoms.
Due to your concerns, you purchased and took emergency contraception (Plan B).
After taking the pill, you noticed vaginal bleeding and experienced pain in your lower left abdomen.
What could be the issue?
Answer: You should go to the hospital for a blood test and a detailed examination.

Reply Date: 2017/03/12

More Info


It sounds like you're experiencing some concerning symptoms following unprotected intercourse and the use of emergency contraception. Let's break down your situation and provide some clarity on what might be happening.

First, it's important to understand that emergency contraception, such as the "Plan B" or "Postinor" pills, can cause a range of side effects. These can include changes in your menstrual cycle, such as spotting or bleeding, as well as abdominal pain. The bleeding you are experiencing could be a side effect of the emergency contraceptive, as it can cause hormonal fluctuations that may lead to withdrawal bleeding. This is similar to what some women experience when they take hormonal birth control pills.

The left lower abdominal pain you mentioned could be related to several factors. One possibility is that it is a result of the hormonal changes induced by the emergency contraception. However, it is also essential to consider other potential causes of abdominal pain, especially after unprotected intercourse. These can include:
1. Ovulation Pain (Mittelschmerz): If you are close to your ovulation period, you might experience pain on one side of your abdomen, which is known as mittelschmerz. This is typically a normal occurrence but can be uncomfortable.

2. Pelvic Inflammatory Disease (PID): If there was any risk of sexually transmitted infections (STIs) during intercourse, PID could be a concern. This condition can cause significant abdominal pain and requires medical evaluation.

3. Ectopic Pregnancy: Although you mentioned that you have taken multiple pregnancy tests that were negative, it’s crucial to rule out an ectopic pregnancy, especially if you experience severe pain or if the pain worsens. An ectopic pregnancy occurs when a fertilized egg implants outside the uterus, often in a fallopian tube, and can be life-threatening if not treated.

4. Other Gynecological Issues: Conditions such as ovarian cysts, endometriosis, or fibroids can also cause abdominal pain. If you have a history of these conditions, they could be contributing to your symptoms.

Given your symptoms of bleeding and abdominal pain, it is advisable to consult a healthcare provider for a thorough evaluation. They may perform a pelvic exam, ultrasound, or other diagnostic tests to determine the cause of your symptoms. It’s crucial to seek medical attention, especially if the pain is severe, persistent, or accompanied by other symptoms such as fever, chills, or heavy bleeding.

In the meantime, if the pain is mild, over-the-counter pain relief medications such as ibuprofen or acetaminophen can help manage discomfort. However, avoid taking any medications without consulting your healthcare provider, especially if you have any underlying health conditions or are taking other medications.

In summary, while some abdominal pain and bleeding can be normal after taking emergency contraception, it is essential to monitor your symptoms closely. If they persist or worsen, do not hesitate to seek medical attention to ensure that there are no serious underlying issues. Your health and well-being are paramount, and a healthcare professional can provide the best guidance tailored to your specific situation.

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