6 week pregnant. With all this or not.

I am 6 week pregnant and had a miscarriage in January, I was 5 weeks pregnant then. I never had any fertility treatment and my health was always good. My weight is 55kgs and height is 5'2". I lead a very healthy lifestyle and do not eat junk food or outside food. Periods were always regular and there was no pain or health issues as such. I consulted a gynaecologist and my early pregnancy scan was conducted. I am attaching the report of scan. The doctor has prescribed some medicines and weekly injections till 16 weeks. I am worried if I actually need all that and if at all its required. Following are the medicines : Susten 200mg(twice a day) Duphaston tabs(once a day) Sysfol active tabs (once a day) I am also attaching the copy of prescribed injections. Please give a genuine advice about it. Should I continue with all this or not.