3 days ago i was punched in the back of the head multiple times about 10 if i remember correctly i have a few bumps and it feels sore and i got a little nauseous i didnt go see a doctor .the first day after a few hours of sleep i woke up with a plugged left ear feeling and a slight numbness on the left side of my face and the inability to focus i was dazed, on day 2 the inability to focus remains and i noticed that while walking and looking around my eyes un-focus and i get dizzy and nauseous for a few seconds and then i go back to normal all while still being kind of dazed and unfocused. is that normal? are those symptoms of concussion? will they go away alone with time? should i see a doctor? please help me