Comparison in Cervical Length and Prolongation of Gestation Age on Vaginal Progesterone Administration to Pregnant Women After the Acute Phase of Threatened Preterm Birth

Participants in this group will receive daily vaginal micronized progesterone (Microgest®) of dose 200 mg for a duration of two weeks following arrested preterm labor. This micronized progesterone will be administered to assess its impact on pregnancy prolongation and changes of cervical length following arrested preterm labor.