YES: It will cause you to have high levels of progesterone, which will prevent pregnancy; however, can cause prolonged menstrual bleeding.
Answered 4/14/2016
1.4k views
Plan B One Step: will not interfere with oral contraceptives But it can impact bleeding. Potential side effects w emergency contraception include menstrual flow changes (spotting, bleeding, early or late period). Brown discharge is likely old blood being cleaned out of the uterus.
Answered 9/10/2017
553 views
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