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. Lactation similarly affects protein, increasing needs by up to 20 grams over nonpregnant women.