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Thanks for providing more information.
Well as you describe,possibly deviated septum is main contributing factor in your case.
However Allergic sinusitis can be other possible cause.
You should try some self care measures until you consider surgery for it.
As medications are only a temporary fix, however, and won't correct a deviated septum.
Try steam inhalation and also do saline gargles(to relieve phlegm at back of throat) & nasal irrigation(to relieve nasal congestion).
Use of Neti pot is recommended for persons suffering with deviated septum.
Also you can try sleeping with your head propped up in an elevated position which lessens head congestion and noises may become less noticeable.
Use a humidifier in your room also.
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