TW- lung problems

Hey, so I’ve noticed sometimes my breathing is very weird. Sometimes I feel short of breath, but when I’m subconsciously breathing it’s very light, especially on the exhales. It’s like when I exhale I don’t feel a lot of air come out at all. Like sometimes to the point where I won’t even feel air on my hands just warmth. I should note that I have pretty bad health anxiety, but idk sometimes I feel like this breathing isn’t normal. Like sometimes when I exhale no air comes out at all. Does this happen to anyone else? I know it’s a symptom of emphysema or asthma and I’m trying not to freak out