Is Breakthrough Bleeding from Birth Control Considered a Period?

Is the bleeding from birth control pills considered a menstrual period?

Hello doctor, I have read a lot of articles but still can't find the answers I need, so I hope you can help clarify.
My period started on September 1st, and I began taking the oral contraceptive pill on that day, with the timing around noon from 12:00 to 1:00 PM.
I forgot to take the pill on September 15th, and then I experienced some bleeding on September 16th, which reminded me that I had forgotten to take it.
I initially thought that I should stop taking the pills and wait for the next cycle, so I did not continue taking them.
The bleeding lasted from September 16th to September 21st.
I would like to know if this bleeding counts as my menstrual period.
If it does, then I would expect my period to arrive around October 18th, but it still hasn't come.
Thank you.

Miss Lin, 20~29 year old female. Ask Date: 2016/10/20

Dr. Cao Guotao reply Obstetrics and Gynecology

Hello, you can start taking the birth control pill on the fifth day of your menstrual period.
It doesn't have to be taken at the exact same time; taking it around the same time is sufficient.
As long as you take it regularly, it will be effective for contraception.
If you forget to take a pill on a particular day, you can take the missed pill the next day.
The bleeding from September 16 to September 21 is considered your menstrual period.
If your period does not arrive after waiting another week, it is advisable to consult a gynecologist.
Wishing you good health.

Reply Date: 2016/10/20

More Info

Breakthrough bleeding while on birth control can be a confusing experience, and it's understandable that you are seeking clarity on whether this bleeding can be considered a period. Let's break down the situation based on your timeline and the nature of breakthrough bleeding.

First, it's important to understand what breakthrough bleeding is. Breakthrough bleeding refers to any bleeding that occurs between menstrual periods while on hormonal birth control, such as the pill. This type of bleeding is generally lighter and shorter than a regular menstrual period and can occur for various reasons, including hormonal fluctuations, missed doses, or the body adjusting to the birth control method.

In your case, you started taking the birth control pill on September 1, and after missing a dose on September 15, you experienced bleeding from September 16 to September 21. This bleeding is likely considered breakthrough bleeding rather than a true menstrual period. Since you had just started the pill, your body was still adjusting to the hormones, and missing a dose can lead to unexpected bleeding.

Now, regarding your question about whether this bleeding counts as your period: typically, breakthrough bleeding does not replace your regular menstrual cycle. If you were to follow the typical cycle, your next period would be expected based on the hormonal schedule of your birth control. Since you mentioned that you expected your period around October 18 but it has not arrived, this could be due to several factors:
1. Hormonal Adjustment: Your body may still be adjusting to the birth control pills, especially since you just started taking them. It can take a few cycles for your body to regulate.

2. Missed Dose Impact: Missing a dose can disrupt the hormonal balance and lead to irregular bleeding patterns. This could delay your expected period.

3. Pregnancy: If you had unprotected intercourse during the time you missed the pill, there is a possibility of pregnancy. If your period does not arrive soon, it would be wise to take a pregnancy test to rule out this possibility.

4. Other Factors: Stress, changes in weight, illness, or other medications can also affect your menstrual cycle.

If you continue to experience irregular bleeding or if your period does not arrive within a reasonable timeframe, it is advisable to consult with your healthcare provider. They can assess your situation more thoroughly, provide guidance on your birth control method, and check for any underlying issues that may be affecting your menstrual cycle.

In summary, the bleeding you experienced from September 16 to September 21 is likely breakthrough bleeding and not considered a menstrual period. Your expected period may be delayed due to hormonal adjustments or the missed dose. If your period does not come soon, consider taking a pregnancy test and consulting with your healthcare provider for further evaluation and guidance.

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