As I posted in r/ocd ..(And I am sorry for this, I just feel desperate).
I don't even know where to start. I feel trapped. Even if I feel okay, the thought of checking my blood pressure just sneaks into my brain and suddenly I feel a huge anxiety. Then I'm grabbing my BP cuffs, and of course: 150-160 and maybe even 170-110. This is the moment when I start sweating and proceed to thinking of whatever mantras and focus on it to get lower. After 6-7 measurements, it does get to 13, even 12...
I wish I could go back in time when I had no idea what blood pressure means, I swear I am crying and I can see no escape from this. I don't even know, which one is my real blood pressure? 
I suffer from GAD and MDD, though I always mentioned my intrusive thoughts and ...compulsions..I never got an OCD diagnosis. I have to live with my cardiophobia.
I just...I would be the happiest person to just throw my cuffs and never do those readings again. I was happy this morning when I finally slept for the entire night then guess what?! Yes, I felt the urge to check it and it was almost 170. I felt I would pee myself from the horror of this thought. It went to 130-120 after 2 more measurements.
Please any advice...any..anything...would help me... just help me..