Does Letrozole, Placentrex Injection And Walaphage Help To Treat PCOD?

Im 30 year old..i got married 9 months back..im diagnosed with pcod ..and im yet to get pregnant...I have taken 2 cycles of letroz in past two months but failed to get pregnant...my weight is 42 kg..doctor has prescribed third cycle of letroz and some additional medicines this month namely placentrex injection , wallaphage 500..Can u plz kindly suggest whether i need to take this much of medication ..