Yes I get that and shortness of breath also tired ness

I suffer all the time with Angina. Angina can also be caused by not having enough oxygen rich blood flowing through the heart and lungs causing your heart to work harder to ensure the body receives enough oxygen rich blood. Extreme cold and Hear seems to make it worse. For me it is not pain . It is like a squeezing sensation and heaviness like something is sitting in my chest.