Irregular Bleeding After Taking Emergency Contraceptive Pills

Q: Irregular Bleeding After Taking Emergency Contraceptive Pills

Hello： Typically, about 16-20% of individuals may experience abnormal uterine bleeding as a side effect within one month after taking emergency contraceptive pills. <br>However, in the case of abnormal uterine bleeding, it is important to follow the standard operating procedure (

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I apologize, but I need to ask about my menstrual cycle.
My period has always been regular, arriving on the 15th of each month.
I took emergency contraception on October 26, and I experienced bleeding similar to a normal period starting on October 29, lasting about 5 to 6 days.
However, on November 14, I had another episode of bleeding that didn't resemble my usual period; it was somewhat bloody and sticky, with some brownish discharge at times, and the amount was minimal, lasting over seven days.
Since I typically do not experience pain with my periods, I have not had any pain symptoms.
Could you please explain why the bleeding has lasted more than seven days?

Xin, 20~29 year old female. Ask Date: 2015/11/22

Dr. Yang Wangjun reply Obstetrics and Gynecology

Hello: Typically, about 16-20% of individuals may experience abnormal uterine bleeding as a side effect within one month after taking emergency contraceptive pills.
However, in the case of abnormal uterine bleeding, it is important to follow the standard operating procedure (SOP), which includes performing a pregnancy test to rule out the possibility of miscarriage, followed by a pelvic examination to check for cervical or endometrial polyps or other tumors that may be causing the bleeding.
If the diagnosis is menstrual irregularity caused by the emergency contraceptive pills, then treatment to regulate the menstrual cycle should be initiated.
Thank you for your message!

Reply Date: 2015/11/22

More Info

Irregular bleeding after taking emergency contraceptive pills (ECPs) is a common concern and can be attributed to several factors related to hormonal changes in the body. ECPs, such as those containing levonorgestrel or ulipristal acetate, work primarily by preventing ovulation, but they can also affect the menstrual cycle in various ways.

When you took the emergency contraceptive pill on October 26, it likely altered your hormonal balance, which can lead to changes in your menstrual cycle. The bleeding you experienced starting on October 29 could be a side effect of the ECP, often referred to as "withdrawal bleeding." This type of bleeding can resemble a menstrual period but may not be as predictable or regular.

The subsequent bleeding you described on November 14, which was different in nature—less like your typical menstrual flow and more like spotting—could also be attributed to the hormonal fluctuations caused by the ECP. It is not uncommon for women to experience changes in their menstrual cycle after taking emergency contraception, including lighter periods, spotting, or even prolonged bleeding. The presence of brownish or coffee-colored blood is often old blood that is being expelled from the body, which can also be a normal occurrence.

In your case, the bleeding lasting more than seven days could be due to several reasons:
1. Hormonal Imbalance: ECPs can disrupt your normal hormonal cycle, leading to irregular bleeding patterns. This can result in prolonged bleeding or spotting as your body adjusts.

2. Uterine Lining Changes: The ECPs can cause changes in the uterine lining, which might lead to prolonged bleeding as the body sheds this lining.

3. Underlying Conditions: While less likely, it is also important to consider other underlying conditions such as fibroids, polyps, or hormonal disorders that could contribute to irregular bleeding.

4. Stress and Lifestyle Factors: Stress, changes in weight, and other lifestyle factors can also impact your menstrual cycle and lead to irregularities.

While it is common for women to experience changes in their menstrual cycle after taking ECPs, if the bleeding persists or if you have any concerns, it is advisable to consult with a healthcare provider. They can perform a thorough evaluation, including a physical examination and possibly some tests, to rule out any underlying issues and provide you with appropriate guidance.

In summary, irregular bleeding after taking emergency contraceptive pills is generally not a cause for alarm, but it is essential to monitor your symptoms. If the bleeding continues beyond a few weeks or if you experience any other concerning symptoms, such as severe pain or heavy bleeding, seeking medical advice is crucial. Your healthcare provider can help ensure that everything is normal and guide you on the best course of action moving forward.

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