Congratulations! I can totally relate, my dd was 11 months old when I became pregnant for ds! I will say it was uncomfortable nursing after I was about 4 months pregnant I think and sometimes even painful! However, I just tried to relax as much as I could, and it did get easier. I have heard good things about Adventures in Tandem nursing, I have not read it but plan to order it from LLL! I can say nursing did not affect ds however, he was 9 lbs, 7 ounces and only 8 days before my due date! I thought dd weaned when she was 17 months but then we went on to tandem nurse and we still are, she only took a little break. Anyway, just wanted to give you some support and encouragement!I think tandem nursing takes committment, just like extended breastfeeding does in general! Good luck to you!