What could this be

Question

I have chest pain, pain behind left should pain on back. And abdominal pain
I'm 17 and vegan so I might be vitamin deficient. Could it be that?
Also I'm not overweight

Answer

If the pain in your chest is severe, call emergency. 
That being said, I get this too when I am having a panic attack. They can happen even if you aren't feeling stressed about anything. The human brain is evil. 
Mine often is chest tightness, arm numbness, and shoulder pain. Numbness and pain can happen during a panic attack because your muscles are tense and because your body's response is to "preserve" blood going to extremities. This can make hands cold too.

Answer

Oh, and the way I make panic attacks calm down is by drinking green tea. Decaf green tea is even better. These teas have for centuries been used to reduce anxiety.

What could this be

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