Talk to Gynecologist on Weak Pregnancy

Aoa my last periods were on 18 of last month(sep) i went for a checkup couple of days said u have weak prescribed gravibinan inj on every 6th day..i was already taking duphaston 10 mg twice a i didnt go for inj and has continued last miscarrige was in April 2022 due to blighted ovum of 1.75 that time i was breastfeeding my son when my miscarriage was em nt breastfeeding my son is 21 tell y i have weak doc only performed ultrasound for few seconds and said u have weak so stressed plz help n guide wot should i do to avoid any further mishap or accindent n to make my pregnany strong