Headaches, possible concussion???

So in gym on Friday I got hit super hard by someone and it literally made my vision shake. Ever since then, every day in the evening, I get this really bad, sharp headache and it hurts to even think or look at bright light. I’ve never had a concussion or anything so idk if that’s it or if this is normal. Idk if I should go to the doctor or just wait it out. What do you guys think?