Hey everyone. My name is Matheus (24M). I have been experiencing shortness of breath that started completely out of nowhere (05/21/2025), one year ago. Since then, it has been present 24/7. It has progressively worsened over time and is currently severe. I do not feel difficulty inhaling or exhaling, but rather a surreal sensation of suffocation that makes me yawn or try to yawn all day long. When I yawn, there is partial relief for about half a minute, and then the suffocating sensation returns.

Since the beginning, I stopped all physical activity. However, when walking, I do not feel any worsening of the sensation. In the sixth month, on a single occasion, I coughed up blood, which made me very worried about acute/chronic pulmonary embolism. However, I have undergone dozens of tests and nothing has been found so far. My doctor assured me that the cause is not cardiopulmonary.

Has anyone with COPD been in the same situation? Do you think a pulmonary disease would present this way? Especially regarding this type of shortness of breath and the constant need to yawn and sigh.