When to Expect Your Period After Taking Yaz 24+4?

What is the expected onset of menstruation after taking the emergency contraceptive pill (Yaz 24+4)?

Hello doctor, may I ask if taking Yaz (24 active pills + 4 inactive pills), will menstruation typically occur during the 4 inactive pill period, or will it start when I begin taking the active pills of the next cycle? Thank you.

Chen, 20~29 year old female. Ask Date: 2020/10/27

Dr. Chen Zhiyu reply Obstetrics and Gynecology

If medications are taken on time without any missed doses, menstruation will generally occur during the placebo pill period.
Thank you for your question, and I wish you health and happiness.
Please take this into consideration.

Reply Date: 2020/10/27

More Info

When taking Yaz 24+4, it is common for your period to occur during the last four inactive (placebo) pills. This is because the design of the Yaz pill pack allows for a withdrawal bleed to occur during this time, mimicking a natural menstrual cycle. Typically, most women will experience their period during the placebo week, which is the time when they are taking the four inactive pills.
However, it is important to note that the timing of your period can vary from month to month, especially when you are first starting to take hormonal contraceptives like Yaz. Some women may find that their period arrives earlier or later than expected, and this can be influenced by various factors, including hormonal fluctuations, stress, changes in routine, or even diet and exercise.

If you have been taking Yaz consistently and correctly (meaning you have taken the pills at the same time every day without missing any doses), the likelihood of becoming pregnant is very low. Yaz is designed to provide effective contraception throughout the entire cycle, including during the placebo week. Therefore, even if your period does not arrive during the placebo pills, you should continue taking the next pack of Yaz as scheduled.

If your period does not come by the end of the placebo week and you have concerns about a possible pregnancy, it is advisable to take a home pregnancy test. You can do this about a week after your expected period date for the most accurate results. If the test is negative and your period still does not arrive, you may want to consult with your healthcare provider for further evaluation.

In summary, while it is typical for your period to occur during the last four inactive pills of Yaz, individual experiences may vary. If you have been taking your pills correctly, you should continue with the next pack regardless of whether your period has arrived. If you have any concerns about missed periods or potential pregnancy, do not hesitate to reach out to your healthcare provider for personalized advice and support.

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