Duphaston Meds

Hi Momsy! Is it okay to take duphaston kahit hindi pa prescribed ni OB? I had very light pinkish na discharged, kpag nagwipe lng naman ng tissue. at 4wks na. I called OB and she did not yet gave me pampakapit pa. My next schedule pa with her is nxt week. Medyo may kaunting ngalay in my lower back today. Had my previous MC last April. Thank you!