Breathing obsession

Does anyone else struggle with OCD when it comes to breathing? I've had this for about two years now on and off and finally had enough and came on here to say this. When I try to explain this to other people, therapists, etc. they just don't get it, so maybe someone on here does. I literally cannot stop thinking about my breathing and when it is at its worst, the very act of breathing feels incredibly uncomfortable. It feels like the walls are closing in on me, I constantly feel like I'm having to catch my breath, and I constantly feel the urge to take a giant, "complete" breath and that is the only way I feel comfortable. It's usually manageable during the day, but at night when I try to go to sleep it's awful because when my brain has nothing else to focus on it reverts to the breathing. People tell me to just stop thinking about it but I literally cannot. Can anyone else relate or am I all alone on this one

It started when I became an adult, and started receiving my mental health diagnosis. I hyper fixated on each and every action I did and how it could be related to my diagnosis’s. It then lead to fixation to my physical health — making appointments and seeing every specialist I can to rule out every possibility. I currently have been suffering with obstructive sleep. I woke up the past few days with severe pain from the lack of sleep whilst believing I was oversleeping. Luckily my fit watch tracks my sleep cycle and it turns out I am not receiving any sleep. I had an extreme panic attack — bursting into tears on the phone with my mom wondering what this case might be. She told me it could be sleep apnea and that a simple sleep study could figure this out. However, knowing my family history I made appointments to every specialist I can to make sure it is nothing serious. The unknown of health can be scary to me. Watching my mother suffer with her physical health chronically since I was a child lead me to be very conscious and aware of how my body is functioning. This morning was one of the worst moments of physical pain. I should just take one step at a time with the sleep doctor instead of taking measures to see every specialist that could pertain with this issue. However, that is very hard to me. I don’t want to ever wake up in the pain I was this morning. Does anyone else suffer with health-related OCD? And if so, how do you find a sense of ease during moments like I expressed?

Does anyone know how to get rid of these thoughts? I have to manually breathe almost every second of everyday and it's getting tiresome and I can't stop thinking about no matter what the distractions are.