I had this SOB issue years ago for a few months and it finally went away at some point. A couple months ago, I got a cold(probably covid) and had a very hoarse voice. I got better after about a week or so, but then I started getting the SOB again. Feeling like I need to take a deep breath and sometimes, it feels like I don't fill my lungs up enough and I'm just very aware of my breathing.
It's gotten a better after a couple months now, but it's still there. I can at least get a satisfying breath easier, without having to bend over and take several deep breaths. It's the worst right before I eat dinner and I'm tired/hungry. When I workout, I feel great and breathing feels pretty normal. I haven't gone to the Dr's, because I know they won't have any idea what it is. Not a fun thing to go through, but hoping it fades away again.