I have been experiencing the same exact struggle for oxygen for about 6 months now. It’s driving me crazy and I can’t deal with it for much longer. I ended up in the ER last week because I felt like I was ready to pass out. The pulmonologist ran tests and everything was normal. Ekg is normal. I even had a chest X-ray and nothing abnormal. Blood tests just reveal high cholesterol so now I’m thinking it’s my heart but why would that cause such shortness of breath? I’m yawning all the time to try and satisfy this hunger for air because normal breaths aren’t working. I wish I had the cure. I’ll start taking iron supplements and fish oil. I will even take B12. I’m so desperate for answers because this feels so debilitating