I can understand your frustration in trying to find out why you're short of breath.
I am experiencing the same thing. I noticed not being able to breath freely in February 2025, following a virus that had gone around our area, so it's been a year of not breathing freely. Sometimes when I'm quiet my breathing is normal, but when I start walking it gets short again.
I wonder if this is a result of "environmental manipulation" with all the chemtrails across the skies.
God bless you and I'll pray for both of us to improve.