Rainbow Light Prenatal

I am 33 weeks and this is the third time changing prenatal vitamins.

I started out with 2 large bottles of VitaFusion gummies, then to one bottle of NaturesWay Complete, and now my husband just bought me Rainbow Light Prenatal from Whole Foods.

First, is it bad to change prentals? I'm someone who likes to try and alternate different things.

Second, this has folate. Not folic acid. I read folate is natural and better than folic acid (man made folate). Anyone know if it's true?

Also, if anyone has had these before please review them and let me know the outcome.