The thing is you do not really know how much Vitamin D you made last spring and summer or the blood level you reached then to keep the symptoms at bay. It might take 5000iu for the depression but more than that to combat the rheumatism. Since it has been 10 weeks why don’t you try some more Vitamin D and see what happens. Maybe take it to 8000iu and see if symptoms resolve. (10,000 iu is the safe upper limit.) The point is you might reach a goal of 50ng/ml but it might take more than that to resolve your symptoms. I think you just need to take some more.