I read your message and fully understood you.
There are some situations that may amplify the sound of heartbeats to your ear. It looks quite interesting when we say it but it happens. It is called pulsatile tinnitus
and is associated with blood vessel problems. Some of the conditions that cause pulsatile tinnitus are:
- high blood pressure
- any aneurism\tumor
- blockage of the ear canal
or eustachian tube.
Olive oil is a home remedy used to treat ear infection
and it relieves the pain by decreasing the irritation of the ear.
There is a high chance that infection has developed and blocked your eustachian tube. My advice is to get a good ENT examination by an ENT specialist
as specific treatment might be required.
If you have high blood pressure try to take it under control
Do not worry for something serious like an aneurysm
or a tumor because they are associated with other symptoms as well and are not common at al
See a doctor and maybe you need special antibiotics for your ear. Avoid swimming pools during this time.
Hope this is useful for you. Wish fast recovery.