How long does Duphaston take to regulate a menstrual cycle, and should I be worried if my period is nine days late after finishing my second course of the medication?
Dydrogesterone (Duphaston) typically takes about two to three cycles to establish a regular menstrual pattern. After completing a course, a withdrawal bleed usually starts within three to ten days, though it can sometimes take a bit longer as your body adjusts. Since your period is nine days late, I gently recommend taking a home pregnancy test if there is any possibility of pregnancy. If it is negative, please give your body a few more days, and update your doctor.
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How long does Duphaston take to regulate a menstrual cycle, and should I be worried if my period is nine days late after finishing my second course of the medication?