The symptoms as mentioned in your post can be due to:
1. Immuno-compromised state of the body.
2. Bone marrow
pathology- due to which the production of red & white blood cells have decreased.
3. Deficiencies of certain nutrients like Iron, Vitamin B 12, Folic acid
, etc. which helps in blood formation & nerve conduction.
4. Electrolyte imbalance
& metabolic factors
6. Prolonged intake of certain medications like corticosteroids
The presence of pain in hip
& sore can also be attributed to deficiency of Calcium & Vit D in the body.
So, kindly follow the advise of your specialist & keep a regular track of your blood counts.
Wishing you a good health.