Welcome to justanswer.com and thanks for your question.
Well as you describe there may be possibility of Tinnitus in your case.
Tinnitus is a ringing, swishing, or other type of noise that seems to originate in the ear or head.
It can be caused due to following factors which include -
Old Age (advancing age is accompanied by a certain amount of auditory nerve impairment and tinnitus)
Otosclerosis (stiffening of the middle ear bones)
Eustachian tube blockage Sinusitis
High blood pressure Thyroid
It is advised to undergo a clinical examination of ears , blood pressure monitoring, Lipid panel,X-ray of paranasal sinuses for further evaluation .
In the meantime you should take some self care measures as well.
Try Valsalva manoeuvre
-Take a breath in. Then, try to breathe out gently with your mouth closed and pinching your nose (the Valsalva manoeuvre). In this way, no air is blown out but you are gently pushing air into the Eustachian tube. If you do this you may feel your ears go 'pop' as air is forced into the middle ear. This sometimes eases the problem.
Try sleeping with your head propped up in an elevated position which lessens head congestion and noises may become less noticeable.
Take OTC Decongestant or Antihistamine
Avoid alcohol, smoking , caffeine.
Do meditation and deep breathing exercises.
Avoid loud noise as well.
I suggest you to consult an ENT specialist for further evaluation and management.
I hope this helps.