Hi. I Was Doing Overhead Tricep Extension Exercises Yesterday And

Hi. I was doing overhead tricep extension exercises yesterday and on the final rep, the dumbbell (25 or 30 lb) grazed the side of my head.as I was finishing up. I do not have a bruise and there was no tenderness to the area. It does seem like my eyes are more sensitive and watering more easily and moderate headache. I had a concussion three months ago and I'm unsure if this event was another head injury or is a triggering of symptoms.