I have very random sharp chest pains directly under my left breast toward the middle of my chest. I normally go a few weeks without experiencing this before it happens, and then it happens throughout the rest of the day(s). Normally only lasts 5-10 seconds. Today it happened and I think lasted around a minute but it felt like forever. When it happens, I can't talk at all. I was just crouched on the ground, scrunching my face, and hyperventilating. I am 16 years old