Hi
Welcome to the MedHelp forum!
Any head injury should be examined. If you hit your head hard—naturally it will pain for days. But it should not cause earache.
If are having nausea, vomiting, excess sleep, severe headache, difficulty in walking and balance, tremors, seizures, vision problems, ringing in ears etc then consult a doctor immediately. These symptoms develop if there is a brain injury or bleed
You have quite a few symptoms. Initial hours are crucial for any treatment. I had all your symptoms and later on they found I had bleeding on my brain and still suffering with Post Concussion Symptoms after 2 years 2 months. Go to ER (or any doctor) asap and get evaluated.