Hi Peter S.
Regarding your prescription for vitamin D.....Last December I too was found to be seriously deficient in vitamin D. The dr prescribed 50,000 IU's of Vitamin D weekly for 12 weeks. Thereafter, I was to take 1000 IU's of D3 daily. I have doubled that to 2,000 because I barely made the minimum acceptable level after 12 weeks of loading dose therapy.
This I will tell you, just as the doctor said, after about 3 to 4 months I felt totally different. The overall aches and pains disappeared. Now I still have definite muscle problems in my neck, shoulder, etc., but I know the generalized pain was due to vitamin D deficiency.
Good luck and I hope you feel better after your treatment too. Remember it takes awhile, probably 3-4 months to start feeling better!