You will have to get your ears checked if there is any pathology in the outer ear. Then you will have to get an audiogram and tympanometry test done at an audiology centre to rule out other pathologies.
Next Steps
Pure tone audiometry and tympanometry
Health Tips
avoid earphones for sometime. start this maneuver called valsalva maneuver. you can YouTube it to know how it is to be done. It will open up your ears