I was suffering from a lot of pain in my late 40s. I was becoming stiff and it was affecting my mobility. I started taking high doses of Vitamin D and it's now virtually gone. My mobility is back to normal and I'm fine. I have to take the Solgar brand. I cheaped out one time with a lesser brand and the pain returned. You have to take the highest dose they do. I take 4000IUs every day, even during the summer.
Try to limit your carbohydrate intake. My pain diminished when I went low carb and I do get breakthrough pain if I have a carby week.