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Published on: 8/20/2025

When do you get your period on birth control pills?

When you take birth control pills, you usually get your period during the placebo or pill-free days, which can be either 4 or 7 days depending on the pill regimen.

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Explanation

Birth control pills are designed to regulate your menstrual cycle. Typically, with a 21-day pill regimen, you take active pills for 21 days followed by 7 days of placebo or no pills, during which you experience a withdrawal bleed, similar to a period. Another common regimen is the 24/4 cycle, where you take active pills for 24 days and then 4 days of placebo or no pills. During these placebo days, you also have a withdrawal bleed.

Different Regimens

  • 21/7 Regimen: 21 days of active pills, 7 days of placebo. Period occurs during the placebo days.
  • 24/4 Regimen: 24 days of active pills, 4 days of placebo. Period occurs during the placebo days.

Both regimens aim for effective cycle control and predictable bleeding patterns. The choice between these regimens can depend on personal preference and how your body responds to the pills. It's important to follow the prescribed schedule to maintain effective contraception and regular cycles.

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