Sharp/stabing pains in heart, chest tighten, dizziness, shortness of breath, headaches. Its being on for six months. Also passed out three times.?

Anything. Could be a problem with skin, nerves, muscle, shoulder, lung, heart, or stomach. See your doctor for a more thorough history, physical exam and further evaluation.
Best to see doctor. If you are having chest pain/pressure, it is best to see your doctor to discuss these symptoms.