Fixing to head out , help please .

Brittany • Christian Mother , & wife ,baby number two Due march 27th??
Okay so Ive been reading a lot about vitamins& TTC . And to my surprise I found out that some vitamines have a negative affect on TTC . And can actually decrease your fertility . I thought vitamines no matter what kind had positive affects all throughout our bodies but the more I read the more untrue that appears to be .  I eat pretty healthy , I mean there might be some things I could change . But for the most part I have a healthy diet . What are some vitamines that are good while TTC , I know prenatals are a must . But anything else that's good ? Maybe helps with cm . And promotes good reproductive health for both male and female reproductive systems . Are there any food specifically for getting pregnant that help ?