other nutrients
Iron deficiency is common in non-pregnant women. This can lead to anemia (low blood count) that can worsen during pregnancy. Iron is critical in developing the baby's blood supply too. You need 16-20 mg of iron daily--sources include red meat,raisins,beans,leafy greens and hummus.
Zinc is important in enzyme pathways and fertility. A balance of intake between 11 mg and 40 mg is critical because a high zinc intake can lead to a copper deficiency. Too much or too little can also affect iron functioning and vice versa. Good zinc sources include animal meat, seafood,beans,seeds and whole grains.
Iodine is important in thyroid function and brain development. Iodine deficiency can lead to cretinism (brain malformation). Sources to get the 150 mcg you need daily include iodized salt, seafood, kelp,cranberries and yogurt.
Choline is needed for cell membranes, gene function, protein synthesis and neural brain development. Egg yolk,peanuts,spinach and beets are sources for the 450 mg/day that you need.
Protein is the building block for the structure and function of maternal and fetal tissues. Many women are protein deficient before pregnancy so be sure you're getting at least 46 grams of protein daily. You'll need more after you conceive.