Congrats. This is my third time around being pg and nursing. Each time was different. I can tell you that the one thing that I felt with all 3 is nipple soreness. Also,as the pregnancy progressed I felt the desire to wean. I'm currently 6 months pregnant and nursing my 18 month old. My tip for you is drink plenty of H20. Also check out kelly.com. I don't go there personally,but I know a lot of women do. As for what your OB said about nutients, I've never heard a Dr say that.