BREATHING

PLEASE HELP!! I’ve had anxiety for the past 5 years or so. I also have somatic OCD where I’m very focused on my body sensations. The worst sensation for me is always noticing my breathing, this is what I’m asking help for. I always feel like taking deep breaths to satisfy my chest feeling and sometimes it’s successful and sometimes it’s not. This breathing thing has been taking over my life I can’t work or do any activity my mind just wants to manually breath at all times and I end up hyperventilating with dizziness and almost feeling like I’ll faint. Idk what to do anymore I want answers why does this happen can this go away?? I’m so frustrated it’s so tiring I’m slowly giving up. I’ve went to the hospital before and they’ve told me my heart is fine my oxygen level is always normal even tho I feel like I’m suffocating idk what to do