Yes, it is completely normal to have a light flow after taking Meprate (medroxyprogesterone acetate) to restart your period. Meprate works by mimicking the hormone progesterone to trigger a withdrawal bleed. The amount of bleeding depends heavily on how much your uterine lining had built up before taking the medication. Since your period was late, the lining might have been thin, resulting in a lighter flow than your usual period. Rest assured, this is a very common reaction and nothing to worry about. However, if you experience severe pain or if your period doesn't return to normal next month, please consult your gynecologist.