Hi,
Welcome to the forum and I am glad to help you out. Any chest pain, especially if it increases on exercise/exertion, should not be ignored.
As you have a history of this ongoing chest pain, please do consult a cardiologist. You might need further investigations like an echocardiography and a stress EKG to look for the cause of the chest pain.
The pain can be due to coronary artery disease or prolapsed mitral valve. If both these tests are normal, then you need not worry much. If these tests are negative (negative is normal), then the possibility of esophagitis due to the reflux of the acid into the esophagus (food pipe) should be ruled out.
The possibility of this is more if you have these symptoms after your meals. An upper GI endoscopy is done for the confirmation of the diagnosis.
The 3rd possibility is a muscular pain (costochondritis) which is also quite common and treatment consists of local application of an analgesic gel and some painkillers.
Please do consult a physician for the same. I sincerely hope that helps. Take care.