Hit near temple semi hard on corner and slightly fell after. hurt bad and dizzy after with ringing in ear. now i have excess saliva, is that a concern?

Head injury: If you did not get knocked out or have evdidence for skull fracture and you are not on blood thinner, your risk for intracranial injury is small. The symptoms you are experiencing are explainable by injury. Observation prudent, however, if you would have worsening headache or vomiting repeatedly get checked. You can expect some symptoms even up to a week.