You should also stop any unhealthy habits that you may have including smoking, drug use, alcohol consumption, and other risky behaviors.
Prenatal vitamins are also very important to begin before conception.
Some vitamins, like folic acid are very important in preventing some birth defects including neural tube disorders. Nutrition before pregnancy is a key point in pregnancy. What you ate as a teenager can affect your pregnancy and child, building calcium for example is important at a young age. Having a baby may not be right for you at this time. There are several ways to prevent pregnancy.