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As you describe there may be possibility of Pulsatile Tinnitus in your case.
In pulsatile tinnitus, people hear something resembling their heartbeat in their ear due to a small blood vessel that is coupled by fluid to ear drum.
It can be caused due to high blood pressure
Apart from this it can be due to Eustachian tube blockage from sinusitis
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 limit salt intake .
Do nasal irrigation as well.
Drink plenty of water .
You should avoid excessive intake of caffeine and alcohol consumption.
Do regular exercises .
Lose weight .
Take proper sleep.
I suggest you to consult an ENT specialist for further evaluation and management.