When you bleed on the pill (or any hormonal contraception) you are experiencing a withdrawal bleed aka not a “real period.” A withdrawal bleed is different from your body’s own physiological period. The synthetic hormones alter your body’s natural hormone levels to keep you from ovulating which prevents pregnancy. When you take the placebo pills at the end of your pack, your hormone levels drop. This mimics what would happen if the egg was un-fertilized in a natural cycle. This induces a “withdrawal bleed.” Getting your period on the pill does’t mean that you would also get your period OFF the pill. This is especially true if you weren’t menstruating regularly when not taking birth control.
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