Replying to Do I have a concussion

Ok so yesterday, I landed sideways and smacked the side of my forehead on the ground. I have a red mark where I hit my head along with having a gnarly head ache, nothing worse than I've already had. Today I feel better my headache is definitely getting better, I barely feel it. Except I do feel like a throbbing head ache if I bend my head down wards or bend over. So I wanna know if its something serious, and if I should get it checked out.