folic acid AND vitamins

my dr. prescribed folic acid AND vitamins for pregnancy - but both make me quite nauseous so I stopped after 3 days. this was in the early pregnancy. now i am in week 30. do you think lack of use of the above will harm the baby? and why are vitamins AND folic acid needed at all? thanks

If so far all is ok. including detailed anatomic scan of the baby. than I dont think a damage was done. Folic acid is routinly recomended to prevent neural tube defects. Other vitamins are specific for each patient, so ask your doctor