I am sorry for your symptoms. I am writing you an initial answer. You may ask follow-up questions, once you read it.
You need a high-resolution CT scan of the lungs, chest x-ray, and spirometry for the evaluation with blood work for evaluation and ascertaining the cause of your symptoms.
You would need the following investigations:
Complete blood count (CBC)
Liver function tests
Thyroid function tests
Erythrocyte sedimentation rate (ESR)
Serum electrolyte level measurement
Immunoglobulin M (IgM)/immunoglobulin G (IgG) coxsackievirus B titer
IgM/IgG human herpesvirus 6 (HHV-6) titer
IgM/IgG C pneumoniae titer
Your symptoms can be due to;
Connective tissue diseases
Chronic infections like Epstein Barr virus
Endocrine diseases (Addison disease).
Chronic fatigue syndrome
I wish your symptoms resolve soon.
I would be happy to assist you further if you need any more information.
Thanks for using Just Answer.