Pain In The Back Of The Head Radiating To Shoulder And Neck, Dizziness. Black Eye Due To Injury

hello, my name is mr y umar currently i have a pain on the back of my head which leads to neck and my left shoulder and when i tilt my head back looking at the ceiling it gives me sereve dizziness while my eyes are open i can see whole of the room going round in circles but gives me a sereve strong pain at the same time, i sleep about 8 to 9 hours everyday night. once it happened to me at night 2am on the way to the loo, i felt strong dizziness and loss control of myself and ended up landing on the bathroom door injury to nose and underneath the eye which give me a blackeye and a scar on my nose these symptoms dissappeared for few months my now they back again but much more stronger pain