Is it ok to take pregnancy vitamin even though i am still not sure whether i am pregnant or not?

YES: Prenatal vitamins are most important to take during the first 2 weeks of pregnancy, when most women don't know yet that they are pregnant, so experts advise that all women who might possibly become pregnant take prenatal vitamins every day, even if you may not become pregnant for years. They are a special type of multivit. (with limited Vit A) and I believe everyone should take a mulitivit. daily.