Hello Thanks for writing to us with your health concern. WIth a history of previous miscarriage, yours is a high risk pregnancy. For a high risk pregnancy, more than normal amount of medications are normally needed. Folic acid tablet is a must. SIfasi contains the pregnancy supportive hormone. Please continue taking the injection atleast till the first trimester is tided over. Apart from these two drugs, it is also important to take progesterone supplements. Progesterone vaginal capsules twice a day should be taken. Have you had your ultrasound scan ? By now, cardiac activity should be visible in the growing baby. Also, please avoid any kind of stress or exertion, jerky travelling and intercourse till the ultrasound scan is done. Be regular with your medications. All the best Take care.