This does not sound like angina, though issues with heart rhythm and valvular abnormalities may need to be strongly considered in the situation. Other possibilities include nutritional deficiencies such as those causing anemia, vasculature issues, low blood sugar, hormonal/ endocrinal abnormalities, renal issues etc. Aside issues with the heart, chest pain can also be causes due to issues with the respiratory system, GI etc. At this time I would suggest a detailed evaluation by a cardiologist to consider potential causes. After a particular cause is identified, it can me managed accordingly.
Hope this is helpful.