3. Take a supplement
Pregnancy vitamin supplements aren't a substitute for a balanced diet. But they can help if you're worried you're not eating well, or you're too sick to eat much.
Make sure your supplement contains 400 micrograms (mcg) of folic acid. You need this while you're trying for a baby and for the first three months of pregnancy. Taking folic acid reduces the risk of your baby developing a neural tube defect such as spina bifida.
Also, check that your supplement contains 10mcg of vitamin D. Vitamin D is important for your baby's future bone health.