I've got to believe that if you're in an area with a therapist you're in an area with psychiatrists. Usually, if you're spinning as out of control as you say your are, your psychologist will refer you to a psychiatrist for medication. Therapy is the only cure for this stuff, but for many of us it just doesn't take. For example, you keep saying outside things are reversing the benefits of the therapy, which shows you aren't internalizing it yet -- I was never able to, but always recommend everyone to try -- it's coming from inside you, from the way you've become used to thinking, not from the outside. But it takes a lot of time to learn that. CBT is touted as the best way to do that these days, unless you know a specific event or experience started this off. Most of us don't. You aren't going to die of this, but if your life is as disturbed as you say it is you should ask your therapist if he or she thinks you should be on medication and if so for a referral to someone to prescribe it, but stay with the therapy and know that if you don't think anxious thoughts you won't be anxious anymore, if you can learn to do that, unless there is an underlying physiological condition causing it, which is why the above answer is good advice, you should always get a very thorough work-up with a good doctor to make sure there isn't something hormonal or food oriented or nutrition oriented etc that is causing this.
You could be me. If you have the finances, see a physician and ask for full exam and blood tests. While deep down you know that it is nothing, it'll help to see it on paper. You mind is strong, you're not silly. All of us on this site have these issues. I saw a hypnotherapist, it was brilliant! Unfortunately I don't have money to carry on. Try it. If you want to go to the ER, just do it. They have to see you and besides giving you peace of mind, they may give you meds that work. I'm not Ativan. Not sure what country you are in but ask anyway. Good luck xx