I suggest you complete a Y-BOCS checklist. It is a good indicator of not only OCD but narrowing it down to the sub-type. There is one for what you are experiencing. I too reherse every contingincy, every possibility, every chance in my head. I will even practise coversations over and over.
https://www.google.ca/url?sa=t&sourc...RgQKo04SHgsIJA
I recommend anyone complete this.