Hello dear,I understand your concern.In my opinion progesterone is one of the important hormone in pregnancy.It supports the conceptus and helps in the pregnancy maintainance.Sometimes due to progesterone insufficiency the growth is hampered and miscarriage might result.In that suspicious cases progesterone is supplemented.Duphaston is a progesterone hormone.Don worry.Avoid stress.Repetition of ultrasound after 2 weeks is necessary to see for improvement.Also take folic acid supplements. Best regards...Dr.Srilatha