Missed Period After Taking Birth Control Pills: What to Do Next?

If you took the emergency contraceptive pill and your period is late, it may be due to several factors. Emergency contraception can cause changes in your menstrual cycle, including delayed or irregular periods. However, if your period is more than a

Since the end of August, I have been taking Loryn.
My period has come every time, but today, after taking the last pill, it still hasn't arrived.
Should I wait for my period to start before taking the next pack, or can I continue with the next pack? I've also been dealing with a prolonged cold, and I'm unsure if the medications have affected this, as I am also taking medication for sinusitis.

Chen, 20~29 year old female. Ask Date: 2021/01/08

Dr. Huang Zifei reply Obstetrics and Gynecology

Dear Chen,
If your Loette is a 28-tablet pack, you should continue taking it as directed.
Some individuals may experience a reduction in menstrual flow or even amenorrhea due to the contraceptive pill, but it is still important to rule out the possibility of pregnancy.
If your period is delayed by a week, it is advisable to take a pregnancy test.
Cold medications may potentially affect the efficacy of the contraceptive pill, so if you have concerns, I recommend using dual contraception (taking emergency contraceptive pills and using condoms).
If you have any other questions, please consult a gynecologist.
Dr.
Huang Zifei, Department of Obstetrics and Gynecology, Nantou Hospital

Reply Date: 2021/01/08

More Info

If you've been taking birth control pills consistently and have missed your period after finishing your last pack, there are several steps you can take to address your situation. First and foremost, it's important to understand that missing a period while on birth control can happen for a variety of reasons, and it doesn't always indicate pregnancy. Here’s a detailed breakdown of what you should consider doing next.

1. Take a Pregnancy Test: If you've missed your period, the first step is to take a home pregnancy test. These tests are designed to detect the hormone hCG, which is produced during pregnancy. It's best to take the test at least a week after your missed period for the most accurate result. If the test is positive, you should contact your healthcare provider for further guidance.

2. Continue with Your Birth Control: If the pregnancy test is negative, you can continue taking your birth control pills as scheduled. Birth control pills work best when taken consistently, and skipping doses can lead to irregularities in your menstrual cycle. If you’re unsure about what to do next, consult your healthcare provider for personalized advice.

3. Consider Other Factors: Several factors can affect your menstrual cycle while on birth control pills. Stress, illness, significant weight changes, and certain medications (like those for sinus infections) can all impact your cycle. If you've been unwell, it’s possible that your body is reacting to the illness or the medications you've taken.

4. Consult Your Healthcare Provider: If your period does not arrive within a week after taking a pregnancy test, or if you have any concerns about your health or the effectiveness of your birth control, it’s essential to reach out to your healthcare provider. They can help determine if there’s an underlying issue that needs to be addressed, such as hormonal imbalances or the need for a different contraceptive method.

5. Understand the Impact of Medications: Some medications can interfere with the effectiveness of birth control pills. If you've been taking medications for sinusitis or other conditions, it’s worth discussing with your doctor whether these could have affected your cycle. They can provide information on whether any of your medications might have contributed to your missed period.

6. Monitor Your Cycle: Keeping track of your menstrual cycle can help you identify patterns and any irregularities. This information can be valuable for your healthcare provider in assessing your reproductive health.

In summary, if you’ve missed your period after taking birth control pills, start by taking a pregnancy test. If it’s negative, continue with your pills and monitor your cycle. If you have concerns or if your period doesn’t return, consult your healthcare provider for further evaluation. Remember, open communication with your healthcare provider is key to managing your reproductive health effectively.

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