This is a great question. It is very important that you make an appointment with your primary care doctor
as soon as possible to discuss your symptoms and have a full history and physical. Depending on what your doctor discovers, he or she may order additional testing such as blood work, a chest x-ray, or an EKG
. If your symptoms are severe, you should call 911 or go to the emergency room immediately. Your symptoms of chest pain, difficulty breathing, and dizziness can be caused by many different things. High cholesterol and blood pressure are usually not an issue for someone at your age except in rare genetic conditions. It is possible that you have a problem with your lungs such as asthma or pneumonia
or even a small pneumothorax. Anxiety often manifests with these physical symptoms as well so your doctor may ask you about your general mood, sleep, appetite, etc. Again, it is very important to seek care as soon as possible as your symptoms sound severe and could be the sign of something serious. Be sure to discuss your symptoms with your parents or caregiver and get yourself checked out so that you can alleviate your suffering.