Prenatal vitamins

Hey ladies ! Can anyone advise of a prenatal vitamin they've been prescribed by a doc? I know folic acid is very important but I'm not sure what to use. I just started taking a regular prenatal vitamin but it makes me so nauseous and sick when I take it in the morning. Also the guy and the vitamin shop told me I should take dha supplement with it to help my body absorb the folic acid - but I don't want to take so many pills. Any advice can help!!! Thank u!