Planning a baby. On text steps to take?

Its been 3 yrs we got married . I am turning 29 this sep and my husband 33. I conceived naturally in 2021 dec without any tablets and it was a spontaneous miscarriage at 6 weeks.We took break of 6 mnths and later i am diagnosed with pcos and took tablets to get period. From 2022 october i got periods every month within 27-33 days but flow was less(2-3 days) .earlier i had 5 days of bleeding. We tried in jan and feb mnth but no luck We consulted gynaec in april. For may month she gave letrozole and no luck For june mnth she gave letrozole and did follocular study where there were 3 dominant follicls and gave injection to rupture. My ET is 6.5 on 12th day. My husband semen analysis was good. But no luck that mnth In july she just gave letrolze and ask us to try but still i got periods We are not knowing the reason. Is it because of my ET or anything going wrong. Can anyone pls pls pls suggest me here on text steps to take?