Wish you had seen the therapist first. Getting mental health help from a general doc can be dangerous, as the only thing they know how to do is dispense medication. But here's hoping the therapy works and you can get off the medication quickly. Basically, if the therapy works, and it has to be a therapist expert in anxiety treatment, you will learn to think differently, which is your problem and mine, the way we think. Drugs don't change that, they suppress that, and while many of us, and I'm in that category, need meds, it's best to see if you can solve the problem first.
You seem to be on the right track by going to a therapist. It can be hard to stop your mind from racing when it starts but we can avoid things that may do it. Avoid looking up symptoms and try not to overthink either. Things you can do to help yourself would be reading a book and drinking some tea. Hang in there because it does get better.