There's so much info on the net. here's a few starter pts:
During pregnancy and lactation, your need for protein significantly increases. Protein is necessary for development of all new cells. For the duration of pregnancy, experts recommend that protein intake be a minimum of 60 grams per day. Women having twins or a multiple pregnancy need even more. Protein is required for the physical growth and cellular development of your baby.. It is also required for the placenta, amniotic tissues, and maternal tissues. Further, a woman's blood volume increases by 50% during pregnancy, and protein is needed to produce new blood cells and circulating proteins.
For example, you can get the 71 grams of protein you need each day during pregnancy by having three cups of milk or soy milk, one cup of firm tofu, a veggie burger on a bun, and a cup of yogurt or soy yogurt. Also, as B12 is mostly found in animal products, you should probably buy a good prenatal vitamin-and-mineral supplement. Look for one that contains at least 100 percent of the daily requirement of iron, zinc, and B12.
You can get your calcium from calcium-fortified foods like soy milk, tofu, soy yogurt, and fortified fruit juices, as well as naturally calcium-rich foods like molasses, collard and turnip greens, kale, bok choy, and tahini (Alicia S. has a ton of recipies in TKD). You could also ask your dr. to be referred to a nutritionist to review your diet and make sure your blood sugar is regulated.
Hope that helps.
Tati