I have 30 years and pains in the left side of the chest ...

Good evening ... I have 30 years and a few days to come I feel some pain in the left side of the chest, pains that come in the night, specifically at the time I go to sleep, sometimes I feel a twinge and sometimes a pain like a burning soon passes, and until then was thinking that it was muscular. Only the night I started to feel a slight numbness in my left hand and a discomfort from the anti-arm to the hand. As my girlfriend is biologist. I did some tests and the lactate and potassium changed. CK and normal CKMB. What could be with these symptoms?
Expert answer:

Whenever this type of symptoms appear it is necessary to rule out some cardiac cause, then you need to go to the doctor and do tests, the ones you have already done will help clarify what you actually have, although at your age the main cause of such symptoms are the emotional problems such as anxiety, stress and depression.