Random pain in body??

I'm 16 and sometimes a random part of my body will hurt. It mostly happens in my fingers and hands though it's happened in other places too. It's like a throbbing pain and it'll hurt for a few seconds, go away, and then hurt again and so on. This lasts for some minutes and then stops. As far as I know, I don't have anything. I just wanna know if this could be something in particular or what? Thanks :)