Pain in left side of chest. Me confused.

When i climb stairs i get pain in left side of chest. I got all test done for example- ECG, Echo, TMT as well as CT angio. All normal. In CT it was diagnosed no blockage but deep myocardial bridges. But still I get pain when I climb stairs but my cardiologist tells it's not angina and not heart disease. But he prescribed Beta lock 0.25 two times.Not only that whenever I shout or speak loudly in angry I start getting pain in left side of chest and also while sleep or half sleep if I sudden awake due to any sound viz ring tone or any fear I start getting pain in left side of chest. Pain spreads to left back, arms and neck too. I am totally confused. Cardiologist tells no heart disease but I feel it is there. If I try to forget or follow words of cardiologist recurring pain due to above reasons remind me and make me confused.