Concussion from landing on feet?

So Wednesday I was with a couple of my friends at the park, and we climbed up this rock wall which was about 10-12 feet high. We all jumped down to the grass, but when I jumped down and landed on my feet, I felt a pain on the left side of my head shortly after. I did not hit my head at all. I don't know if I'm just worrying myself, but since then, I felt a dizzy spell that lasted for about a second. Could I have gotten a concussion from landing on my feet? Today is day 2, and I feel fine, but I'm worried.