Has anyone had a reaction of constricted breathing? I started Tresiba on Feb 18 and fell at work on my back on the 20th. Three days later I was in ER for a breathing problem but just ended up with a diagnosis of a back contusion ( turned out to be a herniated disc). My breathing problem got worse and had to go off work. Thought it was the back injury but am suspecting some kind of reaction to Tresiba. I cannot seem to get a handle either... I either have too little at 14 or too much at 16. There is no even balance. Also my sugars have gone way up.. in the 20s now.. never had that when I was high before... usually just 14 or 15. I do not think the Tresiba works well with my Novo Rapid. I have been diabetic for 22 years Type 1 and am 60 now. I learned how to balance things with Levemir but it was causing gastroparesis so I was switched off of it. I do not think that this was a good choice. Tresiba seems to have sneaky things happening and now I am worried about the pressure on my heart. I did not have any heart or breathing problem before the Tresiba or before the fall. The back is healed now. The breathing problem continues.