Sunny
If its in your left side you might want to see a doctor.You may have pinched a nerve in your shoulder.This can cause pain in spots you wouldnt expect.Once you work out the kink the pain will subside.If what you had was a panic attack it will pass as well.Try three deep breaths and tell yourself that this to shall pass.It will usually lessen the effects of a panic attack.I wish I could help you more