Menstrual Irregularities After Starting Birth Control - Obstetrics and Gynecology

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Delayed menstruation?


Hello doctor, I would like to inquire about my situation.
I started using Loette oral contraceptive pills in June.
My last menstrual period was from September 12 to 17.
During the week of October 8, I was on a 7-day break from the pills, and starting on October 12, I noticed a small amount of discharge resembling menstrual blood when I wiped with toilet paper for about three days.
However, my period has not arrived yet.
Is this a normal case of menstrual irregularity, or should I visit a clinic for an examination? Thank you.

Liao, 20~29 year old female. Ask Date: 2017/10/26

Dr. Huang Jianzhong reply Obstetrics and Gynecology


I started using Loette oral contraceptive pills in June.
My last menstrual period was from September 12 to 17.
During the week of October 8, when I was off the pills for 7 days, I noticed some spotting that resembled menstrual blood color when I wiped with toilet paper around October 12, but it was very minimal.
Now, my period still hasn't arrived.
Is this a normal case of menstrual irregularity, or should I go to the clinic for an examination? Answer: You should go to the clinic for an examination.

Reply Date: 2017/10/26

More Info


It's understandable to have concerns about menstrual irregularities after starting a new birth control method. When you begin taking hormonal contraceptives like Loette, it's common for your body to go through an adjustment period, which can lead to changes in your menstrual cycle.

Firstly, it's important to note that birth control pills work by altering your hormonal balance to prevent ovulation, thicken cervical mucus, and thin the uterine lining. These changes can result in lighter periods, missed periods, or even spotting between periods, especially during the first few months of use. The spotting you experienced around October 12, which resembled menstrual blood, is often referred to as "breakthrough bleeding." This is a common side effect when starting hormonal contraceptives and can occur as your body adapts to the new hormone levels.

Since you mentioned that your last period was from September 12 to 17 and that you experienced spotting in early October, it's possible that your body is still adjusting to the hormonal changes. Missing your period entirely after starting the pill can also happen, particularly in the first few months. However, if you have been taking your pills consistently and correctly, the likelihood of pregnancy is low, but not impossible.

Here are a few points to consider regarding your situation:
1. Adjustment Period: It can take a few months for your body to adjust to the hormones in birth control pills. Irregular bleeding or missed periods are common during this time.

2. Consistency in Taking Pills: Ensure that you are taking your birth control pill at the same time every day. Missing doses can lead to irregular bleeding and increase the risk of unintended pregnancy.

3. Pregnancy Test: If you are concerned about the possibility of pregnancy, consider taking a home pregnancy test. If the test is negative and you continue to miss your period, it may be worth consulting your healthcare provider.

4. Consulting a Healthcare Provider: If you experience significant changes in your menstrual cycle, such as prolonged missed periods, heavy bleeding, or severe pain, it is advisable to consult your healthcare provider. They can help determine if the irregularities are a normal side effect of the pill or if further evaluation is needed.

5. Other Factors: Stress, changes in weight, illness, or other medications can also affect your menstrual cycle. Consider any recent lifestyle changes that might contribute to your irregularities.

In summary, while some irregularities in your menstrual cycle can be expected after starting birth control pills, it's essential to monitor your symptoms. If you have concerns or if the irregularities persist, don't hesitate to reach out to your healthcare provider for personalized advice and support. They can provide you with the best guidance based on your specific situation and health history.

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