Head injury I was hit in the head with a baseball bat about four hours ago and noow I am having nausea, dizziness and heaches. What should I do?

Go to ER. The safest course of action would be to go to the er and be evaluated. If the physician determines that it is necessary, a ct of the head may be needed to rule out a serious injury.
You . You most likely have a concussion even if you were not rendered unconscious. You should go to an emergency room to be checked out.There may be some bleeding inside your head from the impact. The only way to know that is by having a ct scan. Please get help.