Chest pain can be from alot of different things, our first thought always jumps to hearts and death though
. As ^^ said, heart attack pain is crushing and deep, usually with other symptoms. I have talked to people who have had heart attack, one a 36 year old who has had 5 ( !), and they say the pain is unmistakable.
Yours? probably musco-skeletal. I have had similar pains too and just tried to touch my shoulder blades, and it "popped" out.
Other causes are anxiety, anger, over straining like exercise, and acid reflux or similar. Do not fret every little pain, only if it is really "there" and if it it has other things like pain in arm or faintness.