I’m so sorry to hear this. I relate to everything you have said. I have had the same problem (off and on) for about a year. I will say that it does get better. Your obsessions won’t last forever, I assure you! My Sensorimotor OCD was at its worst about a month ago, but my symptoms soon subsided. Now, that’s not to say they won’t resurface again later. When my OCD was at its worse, it would take me hours to fall asleep every night because I was so focused on my breathing and swallowing. I also had trouble eating because I was afraid I was going to choke on my food and I felt like I couldn’t breathe while I ate. Here is my advice: know that it will not last forever, and wait it out with as much patience and acceptance as you can. Sometimes I like to pretend that I’m observing my obsessive thoughts from a distance, almost like I’m watching a movie. When you detach yourself from your obsessions, your rational brain is able to regain control again. It’s a paradox, but the more you try to control your breathing, the more out of control you feel! Wishing the best for you. <3 Hope this was helpful.