Need some Help

My 30yr.old Daughter has had Pain in the left side of her back for many months now, Then there appeared to be some swelling,(like a knot) Below the left shoulder blade. Also lots of pain in her feet. And gets tired easily. At her yearly check up they found that her white cell count was low ("but not low enough to be concerned") Said the Dr. "But we will check it again in a month", No increase. Another month, It has gone up, But not enough. It was at 5 last year. Then 3 this year and went up to 4-5 They did x-ray's of her back and found nothing. Sent her to a Ortho.Who wanted to check her tyroid. Say it's fine But she has high levels of Vit.D in her blood. She has gained a good amount of wieght not lost. And has no energy. Everything I read about names wieght lose as a sign. She has also had a place on her neck swollen-like a limph node or a gland. Any help with this?????? Thanks So Much CAH