Hi! 21 wks today... I was wondering if I should take additional folic acid and vitamin b12. I am already taking my prenatals but the last ultrasound I had the Dr said he saw a very slight curvature in the lumbar spine that could either go away throughout the end of this pregnancy or get worse. Either way I'm being careful with my diet due to being a diabetic before pregnancy. I am going to ask the specialist at my next appt, but I heard someone say it would be good. Any advise?