Are vitamins really necessary if I eat right?

Ivory • 🔹Introvert🔹💩Due 11.14.16 👶Prodigal daughter of the one true King Jesus Christ! ☝ Travel ✈ 💼 Outdoors🎯🎣 🔫 Wife to musician 🎸
Women in other countries don't take vitamins and still have children just fine...I eat super healthy....is it really necessary to stress if I take them or not all the time?