I helped a lot of people with niche hardware and software troubleshoot things for years on Reddit, I'm planning to leave my comments up because of that.
The amount of times I would search for something to only find threads of people asking about an issue followed by comments that say "deleted by [X software on github] in protest for [issue that was solved years ago]" and responses praising the deleted comment for helping them is too damn high.
Or hell trawling the internet archive for dead sites trying to find solutions.
I don't want people to have to go through that.
I don't care where my answers come from, I just want to troubleshoot crap in a timely manner.
You should talk to your doctor about what you're doing and experiencing. Because it sure sounds like you're either doing a breathing technique wrong and suffocating yourself or you're doing it right and have an underlying condition that's making whatever you're doing dangerous.
TLDR talk to a medical professional not social media about it.