Kim, as the others have said, folate is most important before conception and in the first month or so of pg. But it still has benefits throughout the pg and also while bfing. So it would be a good idea to take that. As an aside, there has also been a study which has shown that women who drink alcohol have a higher risk of women who don't drink, and that taking folate negates that (so a woman taking folate has the same breast cancer risk as a non-drinker).

No other vitamins are usually needed. However, some women do find they need iron supplements, a bt can determine if your iron is low.