I have sharp pain in the center of my chest. hurts to touch. hurts to take deep breath, laugh, or stretch. though it was from anxiety at first. im 16.

Costochondritis = : inflammation of the cartilage that connects ribs to the breastbone, or costosternal junction. Local swelling + pain that worsens as you describe + local tenderness = Tietze Syndrome. Causes = unrecognized injury, coughing, etc. or unknown. Ibuprofen, avoiding painful actions Lidoderm patches & local steroid injections reduce pain, but they last 6 or > wks. & stop on their own.Painful, but benign