Talk to Gynecologist on Beta HCG Drop And Brown Discharge

Hi mai bht tensed hoon mujhe poochna tha mere last periods 17 Nov ko they is month 20 Dec positive test aaya main pcos patient hoon metformin and clomid kha k pregnancy conceive hui but mujhe 23 Dec se brown blackish periods horhe they beta hcg 3 days pehle 2 thousand tk aaya 5 week tha phir aaj double how k banaye 1500 hogya less hogya ab Kya hoga ?? Mera ultrasound scan hua tha sac b seen tha doctor said duphaston khati taho ab stop krne ko bola hai miscarriage hojayega main Kya kroon Kya way hai k pregnancy save hojaye ????