I get a dull ache in my chest to a little right of sternum and with it nausea,shortness of breath and sweating. what could be the cause.?

Hospital visit: You should see your physician. They will consider whether you have Diabetes, a cardiac or pulmonary problem. If you are short of breath right now, please go to the hospital for evaluation. Once you have seen them, a virtual consult can be arranged.

Various causes: This discomfort could be from the chest wall, heart, lung, esophagus, or the cartilage structure at the junction of the rib and sternum. Tension and stress can play a role. In other words your physician will have to take a thorough history and perform a thorough physical examination in order to make a diagnosis. Appropriate tests will be ordered.