I have chest pain only w/ certain movements/positions/sneezes. When I have pain, I press on the area and it cracks and relieves the pain.?

Musculoskeletal . Pain responds sometimes to use of OTC analgesics orals or and topicals. See your MD if symptoms persist or Shortness of breath occurs or change in character of the pain.
You most likely. have a musculoskeletal issue. See a physical therapist for advice regarding strengthening exercises that will help to control your symptoms.