Also, you may want to check out this article on angina. There's a paragraph on page 2 that speaks to some of your symptoms.

Can someone ever be sure that chest pain is not angina?

This is a difficult question, but chest pain that occurs once or twice and is brief, lasting only a few seconds, is unlikely to be related to the heart or any other significant problem. However, people with a wide variety of chest sensations – for example, burning, tingling, “electrical feeling,” sharp pain, dull pain, pain worse when moving the arms or neck or worse when swallowing or breathing – as well as those with the anginal equivalents described above, could be having angina, a heart attack, or another life-threatening problem. In short, the chest contains several vital organs and any recurring or prolonged abnormal feeling is a cause for concern. Seeing a doctor promptly is the best course of action. In many cases, this may mean calling an ambulance for transportation to the emergency department of the nearest hospital.