My age is 31, I am having pain in my entire body from 1. 5 yrs, I am getting my wbc count everytime but dont find anything in it so this time I have changed my dr. And he told me that get a examination done for d3 after the test yesterday I found out there is a severe deficiency of vitamin d3 its coming 9. 72. Can you help me out with the reasons and what should I do now to recover