has nothing to do with the vaginal bleeding.
however,has side effects like abnormal menstruation
,spotting,itching,discoloured vaginal secretions,breast tenderness.
If you are spotting,its most likely a side effect.It shouldnt last for more than a day or two.If its more that that,first a pelvic exam in needed,ultrasound
If all normal,then this is due to the noriday.