Hi, I Have A History Of Missed Abortion (due To

Hi, I have a history of missed abortion (due to no fetus growth at 6 weeks). That was 4 months back. I m now 5 weeks pregnant. My doc has prescribed me Susten 100 & sifasi 5000 injection/weekly. Along with this im being given Duphaston twice daily. I am worried about weekly injections. Has anybody else experienced the same. I am not able to go to another doc for second opinion. Please help