How much folate should be in prenatal vitamins?

Hello! 5 weeks pregnant today and this is my first pregnancy — due Aug 2020!

I need advice from the fellow mama out there on prenatal vitamins.

I take the Centrum Prenatal Vitamins, mainly because my family doctor suggested to take ones with 1000mcg (1mg) of folate/day, and this was what I could find at that time.

Been doing lots of reading then realize the clinical guideline for pregnant women ranges from 400 to 600 mcg. And some research goes against taking excessive amount of folate during pregnancy.

So now I am confused. What are your thoughts???? PLEASE SHARE!

PS. Please recommend any better prenatal vitamins in your opinion as well too! I need all the help I can get 🙏🙏🙏