Breakthrough Bleeding While on Birth Control Pills - Obstetrics and Gynecology

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During the use of birth control pills, there may be instances of bleeding?


Hello Doctor: I previously experienced heavy menstrual bleeding that nearly led to shock, which resulted in two visits to the emergency room (each menstrual period lasted over ten days).
This time, due to heavy bleeding again, I consulted a gynecologist and underwent an ultrasound (the doctor said there were no issues with the uterus).
The doctor suggested trying birth control pills for three months (since I have not engaged in sexual intercourse, a pelvic exam was not performed).
I am currently in my second month of taking the pills, and recently, when using the restroom, I have noticed red blood (approximately the size of two fingertips) when wiping.
Last month, my period ended on April 6, and in the days following, my discharge had a slight reddish tint.
I would like to ask the doctor whether this is abnormal bleeding or if my menstrual cycle has not fully cleared.
I apologize for the trouble, and thank you very much.

sally, 30~39 year old female. Ask Date: 2006/04/12

Dr. Li Guanghan reply Obstetrics and Gynecology


Hello: It is possible; making such a distinction is not very meaningful.
The key point is the cause of excessive menstrual bleeding and whether there is improvement after treatment.
Hsinchu Hospital, Department of Obstetrics and Gynecology.

Reply Date: 2006/04/12

More Info


Understanding breakthrough bleeding while on birth control pills can be a common concern for many women, especially those who have experienced heavy menstrual bleeding in the past. Breakthrough bleeding refers to unexpected bleeding that occurs between menstrual periods while on hormonal contraceptives, such as birth control pills. This phenomenon can be alarming, particularly for someone with a history of heavy menstrual bleeding.

Firstly, it’s important to understand that hormonal contraceptives work by regulating the menstrual cycle and altering the hormonal environment in the body. When you start taking birth control pills, your body may take some time to adjust to the new hormone levels. During this adjustment period, it is not uncommon to experience breakthrough bleeding or spotting. This can happen especially in the first few months of starting the pill, as your body is still adapting to the hormonal changes.

In your case, since you have been on the pill for about two months, it is possible that the bleeding you are experiencing is indeed breakthrough bleeding. The amount you describe (about the size of two fingers) is relatively small and could be considered normal for breakthrough bleeding. However, it is also essential to differentiate this from other potential causes of abnormal bleeding, especially given your history of heavy menstrual bleeding.

The fact that your doctor performed an ultrasound and found no issues with your uterus is reassuring. It suggests that there are no structural problems contributing to your bleeding. However, if the bleeding persists or becomes heavier, it is crucial to follow up with your healthcare provider. They may want to reassess your situation, possibly considering factors such as the type of birth control pill you are on, your overall health, and any other symptoms you may be experiencing.

It’s also worth noting that some women may experience breakthrough bleeding due to missed pills, inconsistent pill-taking, or interactions with other medications. If you have missed any doses or are taking other medications, this could also contribute to the bleeding. Make sure to take your pills consistently and as directed.

If the breakthrough bleeding continues beyond the initial few months, or if you experience any other concerning symptoms (such as severe pain, heavy bleeding, or signs of infection), it would be advisable to consult your healthcare provider. They may consider switching you to a different formulation of birth control that may be better suited for your body or investigate further to rule out any other underlying conditions.

In summary, while breakthrough bleeding can be a normal side effect of starting birth control pills, it is essential to monitor your symptoms closely. Given your history of heavy menstrual bleeding, maintaining open communication with your healthcare provider is crucial. They can provide personalized advice and ensure that you are on the right track with your contraceptive method while managing any potential side effects effectively.

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