My husband and I attended our first birthing class last night. One of the other mommy's is a vegetarian and was concerned about consuming enough protein daily. She said that she is not often hungry. Lucky her!
I've found a variation on the amount of protein that you need. According to "What to Eat When You're Expecting" you need 75-100 g of protein per day. But, "Prepared Childbirth The Family Way" is 60 g of protein per day. I found on About.com that you can apply a formula .37 * the number of pounds you weigh, is a good way to figure out the amount of protein you need daily. About.com's formula does not apply specifically to pregnant women.