Pain in my chest

I’m 13 5,5 not over or under weight. I am a cheerleader, and recently I have a dull pain in my chest. By recently I mean has lasted for about 3 days and doesn’t feel any better. Also, the pain is centered in the middle of my chest. Do you have any ideas as to what it could be? Thanks

Also I forgot to say that it is a dull achy pain.