Re: Calcium intake and mama's weight loss from nursing...
Totally normal to lose weight while nursing, and to not have your period back at just 1 year. The average time until return of menstraution in a nursing mom is around 15 months, IIRC, though there's a wide range, with many women getting their fertility back sooner 15 months and plenty after, as well.
I don't know how much calcium you're "supposed" to get, but I do know that taking a prenatal vitamin while nursing is recommended. That one-stop approach is usually easier than trying to get all your vitamins straight individually.
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"