I'm a 16 year old female, and for about 3 weeks now, I've have the urge, almost all the time, to take very deep breaths. It happens the worst at night, or when I'm sitting or lying down. I've very constant, and this has never happened before. I don't have asthma and it's not in the family history. My chest has also recently started hurting. I don't think it's something serious, but I just want to make sure.