I have chest pain when I breathe in cold air?

I read this article online that says. If you have chest pain while breathing in cold air, this may be a sign of a heart problem. I am only a 16 year old female. I don't do drugs,smoke,drink or anything. What could this be? I have never had this chest pain before in cold weather. It's like chest pain between my left side sternum and towards the bottom of my breasts. I can't complete a deep breath because it is a sharp pain. When I entered my warmer house, I lied down, and as I was breathing deeply I could hear whistling when I inhale. Last moth my Doctor prescribed me an inhaler because I had difficulty breathing at the time I had cough cold fever and cough induced vomiting. I got better so I stop using the inhaler. Am I ok? I am getting a little worried!!!