Hey ladies! So, do any of you know if getting your period while TAKING prometrium is a normal occurrence? This is my first round on prometrium WHILE on metformin and I’m experiencing brown discharge on day 36 of my cycle... I tested and got a BFN but due to my PCOS and irregular periods, i know that my ovulation is late and so I’m probably 14 DPO... Should I call my doctor or let it ride and see if AF comes down...?