Let us solve one by one.
3 months of phlegm with cough, wheezing
and chest pain
. And you say X-ray is normal. I think it would be wise to repeat the X-ray and if still negative please go for a contrast enhanced CT scan of the chest. Get all the relevant blood and other tests done and Sputum ( green phlegm) microscopy, culture and sensitivity tests to help us give the most proper and appropriate antibiotic therapy ( green is infection)
Less oxygenation can give you numbness
and all other symptoms. There can be an associated PID- pelvic inflammatory disease
. The antibiotics and medicines for the above condition will hep for this too.
If I think of both the conditions along with other symptoms you have mentioned I would like to rule out tuberculosis
and cancer by various tests .