It all started 3 months ago when suddenly In office, I was feeling short of breath and was feeling that I am going to faint. it lasted for few minutes and went away. It came back again after 3 days and since then I had severe shortness of breath on walking, eating, talking etc. I have made emergency visits to hospital as well where they took ecg and said all was normal. I have had ECG, Echo, TMT , lung function test, all blood tests which all came normal. Doctros are writing it off as Anxiety. After few weeks, I developed Sleep apnea due to this which is moderate at the moment. I also get dull chest pressure in centre sometimes. Sometimes, when I sleep, I feel short of breath and wake up. Anyone had similar expericne.