Same symptoms for me. My family doc, cardiologist and pulmonary docs all said it was anxiety Suggested I go on anti-depressants. It was the support and info I received from here that actually helped me. It was suggested here that i see an ENT. Doc. I ended up having a severe case of silent reflux that was so bad, it was closing up my throat, causing me difficulty takings deep breath. I was prescribed 2 antacids and after 6 weeks I am finally back to my old self. I am totally off coffee and other acid producing foods because of the reflux. It was hard to completely stop coffee but I am sleeping better than I have in years.