Thanks for writing to HCM
There are various causes of single pulmonary nodule
Differential diagnosis varies with age. You need proper examination and history taking. Nodule may be infective, immunological, tumour etc. You need follow up for nodule.
So,better you consult your pulmonologist.
For your ear problem, get examined by ENT specialist
to exclude any pathology. Without auroscopy,it is difficult to say anything.
Get well soon.