Anxiety ?? Hard to breathe .... help ?

Well It always feels like it's hard to breathe, like when I breathe I don't get air or I barely get air, and it feels like I wanna breathe in deeper but can't . I have seen 4 doctors and they said my lungs sound fine, heart is fine and my oxygen saturations were 100% when I was at the ER. I seen my fam doc, ER doc and nurse, and a nurse. They said it's anxiety. i know I do have anxiety , I have been having attacks lately. It just feels like no matter what I do it feels like I can't breathe or get enough air. The doctors said I was a little congested , but nothing major .My lungs / sides feels a little tight and like I can't get air and sometimes my stomach gets queasy. I breahte fine when I sleep, no problems then its just when I wake up I feel weird and feel like I can't breathe enough or whatever. I'm kinda scared right now, i'm scared about if i'm ok or not, or if my lungs are ok. I just don't know what to do to get rid of this feeling. Also its warm outside and it feels a little hard to breahte since its hot and stuff but i'm staying inside in air condition and fans going..;.i just feel so worried about my lungs. I just have this weird feeling in my side / chest / lung area. I don't know...help ??