What Causes Periods Twice In A Month With Bleeding?

Hi my age is 42 I m getting periods twice a month all my reports r normal so my doc gave me calcimax forte nd gynae C V P for 2-3 months so while eating dat I m still getting periods after 23 days dis month I got period on 7 August but still I m bleeding so now doc gave me pause mf to eat for 3 days why all this happening