Having trouble taking a deep breath???!!!!!!!!!! Help!!!!?

Hi! Recently I have been noticing I am having trouble taking a deep breath. To solve this, I usually hyperventilate ( breath really fast in and out I don't know if I spelled that right) and it's fine for the nxt breath. Then it happens again!! I start to get freaked out and really anxious. I'm thirteen by the way if that helps. Does any one have solutions? I would really appreciate it. Thanks! : )