I was late on my periods for few days last month.after checking for upt, doctor gave me regerstrone for withdrawal bleeding...will my next month period will be affected because of taking regerstrone in that particular month??

Menstrual Cycle: Regestrone contains progestin which is a form of Progesterone. In Females, Progesterone and Estrogen regulate the Menstrual cycle each month. Any change in the hormones may cause the cycle to reset or cause a shift in the cycle. Progesterone spike typically causes the endometrium to slough off resulting in a period. Your cycle will restart on the date you started bleeding.