IRCT20120104008611N10 IRCT 2020-01-31 Qazvin University of Medical Sciences The effect of Dydrogesterone and micronized progesterone on threatend abortion The comparison between the effect of Dydrogesterone and micronized progesterone intake on consequences of pregnancy in threatend abortion. 2019-10-22 anticipated 200 Complete https://irct.ir/trial/33884 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Participants were randomly assigned to one of two study groups using the random number table and received group-based intervention. The medications include Dydrogesterone and Lutogel capsules (micronized progesterone), which are encoded in separate envelopes and are used in addition to patient education on the envelope and delivered to participants. 3 Threatened abortion. Intervention 1: Intervention group 1: Didrogesterone tablet made by Abourihan Company, 10 mg twice a day (10 mg every 12 hours ) since the initial of the study up until one week after bleeding. Intervention 2: Intervention group 2: Progesterone capsule made by Tansim Company,100 mg twice a day since the initial of the study up until one week after bleeding. No - There is not a plan to make this available Justification or reason for not sharing IPD is Because sharing participants' personal information is not a goal of our study.