two days ago I slipped and hit the left side of my head, just above the temple area on the edge of the door of my car, I thing I went out for a few seconds. The entire day I felt out of it. I have a bump still. Thing is I have a constant pressure emminiting from the top-back part of my skull to both sides. I visited a doctor earlier today but at the time that symptom was not there. he advised that I monitor the situation and if my speadh becomes slured and I feel faint or nausea, to take a CT scan. This new symptom have me concerned. Note; his diagnosis was marred by the fact that my pressure was 80 over 60 at the time of my visit, so that could have accounted for my dizzeness and lightheadeness.