Debilitating headaches, bacpain, joint pain, abdominal pain, nausea, vomiting, random fevers, emotional instability, hair loss, vit. D deficient. Help?

With all of those go. See your primary care doctor for a thorough workup. There are so many possibilities that 400 spaces here could not do them justice. If you are not getting answers from your current physician, there certainly no reason for not getting a second opinion and even several specialty opinions if necessary to clearly define the problems. Do that at the soonest possible date.
Generalized pain. You have a multitude of symptoms. This is not a good situation - is this all due to one cause or a multitude of causes. Please go and see your pmd or specialist.

Related Questions

Sharp lwr r back pain sudden+forces me to stop moving, lwr r abdomen pain, nausea, vomiting, decreased appetite, can't walk+sleep, chills+feverish. Help?

See a doctor. How long has this been going on for? Your symptoms warrant a visit to your physician. Fever, nausea vomiting and severe abdominal pain are all reasons to see your doctor today.