About 2 years ago I had an issue where I could no longer breathe automatically and never felt that I could get enough air in so I was also yawning etc, it was absolutely debilitating and I don’t know how I survived, I went on anti depressants that didn’t really make an impact and after 8 or so months it just kind of faded away and I went back to normal automatic breathing. In the last couple of days or so it has suddenly come back, I was not anxious beforehand but when I felt this coming back on I started having really bad anxiety which makes it very hard to concentrate at school, I have no idea what is going on or what I should do, I have always been an anxious person but this is a different beast, any ideas?