I was playing around and i got pushed down and my head smaked off the sofa arm and it's hard.. now it's pulsing also got ocd so i'm very worried?

Seek evaluation if: worsen. Have someone observe. Symptoms of concussion: Loss of consciousness, amnesia, confusion, repeating question, dizziness, lightheaded, unsteady, blurred/double vision, ringing in ears, personality change, difficulty talking/eating, persistent headaches. If serious, symptoms will usually develop within 24 hrs after accident. Symptoms may last for days, weeks, months. Best regards.