Suggestions needed :)

Hello ladies I'm just wondering if anyone here knows any good vitamins to take while trying to get pregnant that way we can have a healthy baby. 2 mc and I just want to create a healthy cervix, uterus and also placenta for my next baby. I know prenatals are good also I am taking that now but is there anything else I can add like herbal teas vitamins letter that either your dr. told you its good or something you discovered thank you so much