I would like to know what the thought is on prenatal vitamins. The UK promotes not taking any vitamin A, yet American prenatal all include it. The leading brand in UK (Pregnacare) has only 400 mcg of folic acid, yet most American prenatal vitamins have 800 mcg. Pregnacare also doesn't include calcium, yet others do (Rainbow Light and The Honest Company [organic]) and none of the vitamins I have come across include Docosahexaerioc (DHA). There is also a division on when you should consume vitamins - 3 months before or once you realise your pregnant, all the way through pregnancy or stopping at first trimester? Help!! A lot of information and not knowing who to believe.