If you are experiencing difficulty hearing or a sensation of a blocked ear, it may be due to a build-up of earwax. It is important to avoid inserting anything into your ear, as this can potentially worsen the situation. One possible solution is to try applying a few drops of oil (such as olive oil or baby oil) to your ear twice a day for 4-5 days to soften the earwax and aid in its removal. If this does not help or if you experience other symptoms like pain or dizziness, it would be advisable to consult a doctor.