Hello Mam, I Have History Of Two Miscarriages. Now I

Hello mam,
I have history of two miscarriages. Now I am trying for pregnancy. test shows I had low progesterone level during pregnancy. Dr suggested progesterone just after ovulation. So, which doses form of progesterone is best weather Pills(like duphaston) or gel , injection or what. And I am working lady, is there any need for completer rest during first trimester.
Thanks.