So, how does the heart beat sound? Regular and at a reasonable rate? If so congratulations. the heart is more important than the hearing.
No sure what you mean it works... I read you are still having some plugged ear problems.
Most people do not hear their heart beat in their ear, but I can say sometimes, and rarely, I can hear my heart beat when ling is bed on my side - one ear against the pillow.
I have had a lot of ear infections and never a residue noise. Have you told your dr? I would find out why.