Yes. There is a small tube that connects the ear canal to the throat. This is not normal. If the air is coming out of your ears you have a hole in your eardrum. Take it from someone who has had a hole in one eardrum for 20 years!! And by the time you realize you have an ear infection it is a bad one because it can't build up pressure behind the eardrum. The infection just leaks out the hole.

the eardrum protect the middle and inner ear.

Well in your eardrum there is a speaker

because the flap looks like a drum

The function of the eardrum is to transmit sound and amplify vibration.