Yesterday, i suddenly got heart pain, dizzy & nausea. i had some water, after 20min, i was throwing up. today, my heart feels bruised & chest is heavy?

Need to examine: It is not feasible to provide a meaningful opinion without taking additional history, physical examination and may be some tests. It would be prudent to see your doctor and discuss if you may be depressed. Counter-intuitive as it may seem, exercise may help. Start with low intensity exercise such as walking and gradually increase the intensity as tolerated. Wish you good health!