Folic acid is extremely important in the development of a fetus.
Birth control pills destroy it.
Therefore, there need to be a physcian’s recommendation on how to get the folic acid levels up to par, perhaps with a good pre-natal. Talk to your doctor, but find one who is educated in nutrition, not just in medications.
A blog post can only introduce a topic but not cover it in depth. For more study on various topics, click here for links to various Christian ministries.
Depending on the ministry, there may be online church services, YouTube videos, podcasts, radio programs, books, teaching, or more. You have to seek out what they have.