Hello, If your ears are plugged, try swallowing, yawning or chewing
sugar-free gum to open your eustachian tubes. If this doesn't work, take a deep breath and try to blow out of your nose gently while pinching your nostrils closed and keeping your mouth shut. If you hear a popping noise, you know you have succeeded.Injury to ear while cleaning causes ear pain which is not there in your case . Swimming could be the cause .consult ENT specialist if above precedure doesnot work ,it has been 3 weeks already.