Mom's worry

I just heard the other day that Green Tea blocks folate absorption. I read this on my anencephaly support web site that I try to read once a week or so. I have not done my own research but was very saddened when I read this.
I started drinking green tea back in the beginning of December. I have to ashamedly admit that I had not been taking my 4 mg of folic acid, however I was taking a B vitamin. Of course it's natural for fear to creep in because I always wonder what if anything I could have done differently with my first pregnancy. Which in my heart I realize is ridiculous because God allowed Nathaniel to die and that was God's plan for our lives. He was my special baby boy who avoided all the pain and hurt of this life and went straight to heaven to be with Jesus, which is where we all hope to go someday. My dad said it perfectly in his eulogy of Nathaniel, "Nathaniel lived a virtually perfect life. He spent 8 months next to his twin brother Gabriel and then was welcomed into this world briefly by his loving parents, grandparents, and friends. He then went to heaven where he will never suffer from sin or hurt."
All that to say that I think as a mom it's my natural tendency to worry. But then my worry is magnified because of the experience we had in our first pregnancy. Our doctor has agreed to do a sonogram at our 12 week appointment so we can make sure everything is ok. (Nathaniel was diagnosed at 12 weeks).