I started out with Real Organics pretnatals and really liked them but they were a bit pricey for me.
Now I'm on rainbow lights but the one a day thing just isn't working for my morning sickness. Going on NOW prenatals when this bottle is up. As long as it's derived from food and not synthetically made in a lab you should be good. When you look at the label it should have (from blah blah) on it next to whatever vitamin.
It's great to find one with DHA in it but my midwife said that that can cause a lot of nausea in the beginning so it might be better to take them seperately to start. Also a trick is to but the DHA pills in the freezer, that way they digest slower.
Good luck and congrats!