D.
I don't know what to tell you about what kind is best but I have a trick that has worked for me. I take my vitamin at night in case they might make me sick, I'll be asleep! (I have a little girl that is almost 5 so by the time I get to sleep I sleep pretty sound). Just thought I'd pass that along! I'm due Feb. 19, 2008. Good luck to you! :)