Hello, Sometimes brownish spot may indicate early sign of miscarriage though mild spotting is quite common in early week of pregnancy. Duphaston contains dydrogesterone (progesterone) and is used to prevent miscarriage (specially threatened type) & support pregnancy (as your embryo too small). Continue folic acid supplements, protein rich diet, avoid long journey/heavy work, maintain personal hygiene, take adequate rest and repeat scan after 4wks for detailed feto-placental well being. Do periodic check up and complete suggestive investigations. Be well.