I have a cell phone and people I know are in the cell phone address book so when it rings I know who it is. That can tell me if it is good to pick up the phone or not. I am sorry you are so anxious about the phone ringing.

I cannot really give out a diagnosis but a psychiatrist could. If you are interested, some people enjoy the quizzes as an interesting feature for self discovery.
Psychological Tests and Quizzes