The replies before me already mentioned it, but I sincerely hope you take their advice. This is a symptom, a trigger, not the source of your anxiety and pain.
1. Seems this falls under addiction, now that you know, you can combat it.
2. Seek therapy, this is only a symptom of underlying issues
3. It's not the psychics, this pain is coming from you, there are other people in the world that can have a reading and enjoy it for the possibilities, or preparations, and not take it too seriously and use them as a kind of tool, to help (if) things come to pass. I know I do, I dont get any fear anxiety or pain surrounding readings, in fact, I find them very helpful.
I prepare (if, say it says I may get kicked out of my area like we just sold the building and Leeann had mentioned there will come a day when I SUDDENLY need to move, I took this PRECAUTION to set things up in case it happened. It did. This did not negatively impact my life, I only took what precautions I would without going into an extreme.) with readings, but it took a long time to filter out the bad or cold readers or negative ones. Trust me I heard my SO was scum many times, it simply wasnt true.
I took into consideration it was true and looked into that possibility, then decided it wasn't accurate based on my real world experience. Normal people can do this. Or rather, mentally healthy people. I've been where you have been in the throes of anxiety and pain, and I empathize, but I want to impress on you that life can be better. You can overcome this as an addiction and overcome your anxieties and fears. I truly hope you have access to a good therapist who can guide you through this. For now,try to quit. Acknowledge this as an addiction, that helps. And also realize this is from you, and in some way it sounds like you are deflecting onto them. No one goes into a psychic reading TRULY believing it. It isn't logical and seems impossible. This means that you justified the probability of it being real, and then used it as a trigger for your underlying anxieties. Its completely understandable ESPECIALLY with the world as it is, so don't be hard on yourself about this, acknowledging is all it takes.
I am not going to give crappy cold readers or crappy negative readers a pass, but, you take the risk either direction by testing a reader. It's a GAMBLE until you find a reader with consistent results, and that gamble can be an addiction just like any gambling.
I wish the world wasnt full of cold readers or bad readers, but I also know that its human nature to prey on spiritual beliefs (and it lacks scientific backing, so its easy for them to be "psychics")