I am diabetic for 5 years. This year 2013 I have 3 kidney stones and 1 thyroid nodule at 7 mm. My calcium serum is 10. 1 and vitem d is low. Nurse started me on vitem d 600-1000. I am not sure thats a good idea. I am very worried, I also have had copd for five years and aortic atherosclerosis (found this year also). I now take many medication that I found have minor cotraindications/drug-drug interactions. Any help would be so appreciated