Girls, is anyone prescribing something? Such a situation: for several …

Girls, is anyone prescribing something? Such a situation: for several days I didn't feel the baby and the movements have shrunk, so I decided to go for an appointment, listened and they sent me for a KG test, they said everything was fine, and I started feeling good about the baby, but I don't understand why the doctor prescribed "calf vein or kurantyl" three times a day. She said it's for improving placental blood flow, but I don't understand from where she got that there are problems with this? Yes, and I read what these drugs are for and now I don't know - I'm afraid to take them, in case I harm myself. Is there maybe specialists?