Fell back and hit the back of my head very hard on a concrete floor 2 days ago. still very painful to touch and pain in neck. should i see a dr?

Head injury: Did you lose consciousness or feel nauseas after your injury? Are you having double vision? These are signs of a more serious injury that require immediate medical attention. That the area is sore is normal. Apply ice and take an anti inflammatory, if not better in a few days make sure you f/u with your doctor. Feel better soon