Crystal,
i considered getting into all the parathyroid and osteopoenia issues, but figured it'd be a little to hairy for FAQ totally valid points though
and again, i totally agree that you will have a really extra fancy heavenly body
(off to add info on D3 vs D2)
Ruth, b/c of the MS, i would really look into getting tested.
What you and your son are taking right now is good, yes. However, you may require a little or a lot more, or perhaps you are exactly where you need to be. One way or another, it'd be very valuable info to have b/c good vit. D levels are essential with this condition. (off to add info on testing)