progesterone HELP

Lexi
I had a miscarriage aug.28th 2017 me and my SO have been ttc but my ovulation was all over the place and my periods as well they would come for more then a week or just not come at all. Doctor recommend progesterone so he just called it in for me. Is this gonna help me get pregnant ? Or hurt my chances?? Anyone had it before that can give me some advice