Teas not safe?

Anyone know of certain teas are no go during pregnancy?

I read you shouldn't drink too much green tea due to possible neural tube defects.

I have youthberry and wild orange blossom tea a mixture of white/herbal teas

Not sure if that would be okay or if I should wait to ask the dr.

This seemed to be a good resource on teas for me, they are one thing that I always enjoyed drinking haha.

http://www.americanpregnancy.org/pregnancyhealth/herbaltea.html