Thanks for your query.
Congratulations on your pregnancy first !
You are extremely lucky to have conceived with endometriosis
You seem to be having a threatened abortion
, that is, there are findings that suggest that you MIGHT miscarry this pregnancy.
Susten is progesterone
preparation as is Duphaston.
Your treatment protocol is just right.
ALongwith the medication, please take adequate rest, avoid sexual activity and have repeat ultrasound
All the best.