After a previous miscarriage, doctors often prescribe several medicines during pregnancy to support the baby's growth, reduce the risk of complications, and correct nutritional deficiencies. The medicines you mentioned are commonly used for different purposes; for example, progesterone support (Gestofit SR 200) helps maintain pregnancy in early and mid-trimester in some women, while iron, calcium, folic acid, vitamin D, and protein supplements help support the mother's blood levels, bone health, and baby's development. Each medicine usually has a specific role, and they are often given together because pregnancy increases the body's nutritional and hormonal needs. When taken in doctor-prescribed doses, these medicines are generally safe, and serious side effects are uncommon. However, some women may experience mild issues such as nausea, constipation, stomach discomfort, dark stools (with iron), or mild bloating. Taking multiple supplements together is usually safe when properly prescribed, but unnecessary duplication or incorrect timing can sometimes cause discomfort or reduced absorption. That is why it is important to follow the exact schedule given by your doctor and not stop or add medicines on your own. If you feel excessive side effects like severe vomiting, allergic reactions, constipation not improving, or unusual symptoms, you should inform your doctor so the prescription can be adjusted. Overall, this combination is often given in high-risk or closely monitored pregnancies, and it is usually aimed at protecting both mother and baby. Regular follow-up with your gynecologist ensures that only the necessary medicines are continued as the pregnancy progresses.