Hi, I'm 16 year old female and I'm not a smoker, fyi. I've got chest pain, and feels tighten and sometimes pain at the left upper breast area and sometimes left but this rarely happens. Before I go to sleep, I feel like short of breath and I need to inhale more. Then, my heart beat hard and fast since I'm scared. Oh yea, I also feel that the burp stuck in my throat. Sounds silly though.
Last time, I've already checked up my heart, lungs and blood and the doctor said it's normal. Nothing's wrong. So, I wonder, Is it due to Anxiety or what?