Ever have trouble sleeping because you're focused on your breathing?

I'm confused on whether I'm just focusing on it or if I'm really stopping breathing!
I just took an anti anxiety medication (klonopin) to try to relax. I'm online reading and at times notice my breathing is regular when my mind is off of it, but then I notice I've stopped!

I'm so unrelaxed and worried. My chest had felt heavy but I was crying earlier, not sure if that's why.
Ever have trouble sleeping because you're focused on your breathing?
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