Sharp right chest pain under peck that worsens depending on position or with deep breaths . it feels deep as if a surgical blade is cutting me !

Have you been: Working out? Sounds like a musculoskeletal type of pull or strain. Be careful not to reinjure it! heat might feel good and regular Ibuprofen !

See your doctor: You describe what's called pleuritic pain. It can be due to many causes. At 19, one possibility is a small spontaneous pneumothorax or lung collapse. If you're short of breath, go to the er. If not, see your doctor. You'll need a chest x-ray.