In the last few days I've had the feeling that I can expand my lungs to their full capacity and every minute or so I have to take a really deep breath. I feel these symptoms pretty much 24/7 but I notice them less when I'm active/doing something fun or engaging. I also notice them less when I'm lying down. I've also experienced a feeling if heaviness on my chest and not chest pains, but an unusual sensation in my chest but these come and go and are pretty mild.
I went to the doctor and she told me that they were symptoms of stress (I've just got my A-level exam results back so it has been a stressful time) and that I've been experiencing panic attacks. But do panic attacks go on this long??! The doctor also did physical tests and I don't have asthma and no obvious heart or lung conditions. She seemed to think it was all down to stress, but I really wouldn't describe myself as an anxious or easily stressed out person. One of the main reasons I feel stressed at the moment is because I have these symptoms - it's a vicious circle!
If anyone else has had these symptoms I'd be grateful to hear about it. I'm scared there's something really physically wrong with me.