I really feel you on this, the mummy's wrist struggle is so real especially when you are constantly carrying and nursing your little one. The Blackmores pregnancy and breastfeeding advanced is quite comprehensive already, but whether you need extra calcium or iron on top really depends on your own levels, so it might be good to bring this up with your PD or even your own doctor at your next visit, just to be safe. For the wrist, I would honestly check with a doctor too, as they can advise whether physio or specific supplements would actually help your situation rather than just guessing.