I think logically you know you're on the right path, by having a knowledgable doctor that can prescribe the appropriate medication for you. You're very smart to deal with it now, instead of having it fester and get worse, because believe me, an untreated anxiety disorder will get worse, if not prevented from getting bigger in its early stages of development. And this I do know, unfortunately, from painful personal experience.
I still recommend some temporary benzophanines, if your doctor is willing to prescribe them (preferably Valium since it has the longest half life out of the class of benzophanines). You can take it once or twice a week, possibly at 10.0 mg, or at a dose your doctor may recommend, not daily, but just a few times a week to calm your mind, when this anxiety gets really, really high. Your won't develop withdraw symptoms to the Valium, if you take it one or twice a week, versus taking it every day of the week for a few months. Daily frequency is the cause of withdrawl issues, versus occasional use, when needed.
However once you get stabilized on a medication that fits your chemistry, you'll be able to feel like your normal self again.
You mentioned before that you have school next week. I think your focus on your students, developing your curriculum, grading assignments, and other parts of your job, will distract you from focusing on this issue too much. That's the benefit of my job, when my anxiety got out of control. It gets me to focus on database issues, since I work in the Information Technology field, instead of a consistent focus on anxiety problems that were once out of control, but have been balanced now, due to the *right* medication.
A lot of your anxiety seems to be just your irrational fear of going crazy, when it really won't happen, and I don't mean to minimize what you're feeling by using the word *irrational.* However, since I too am a fellow sufferer of an anxiety disorder, I know how the mind can be fixated on something and associate it with doom, when there really isn't anything to be afraid of, but your body chemistry doesn't agree with your logical thinking.
But, if I may just add some words of encouragement, again as a fellow anxiety disorder sufferer speaking to another anxiety sufferer, who's been and knows what you're going through --- try to get your mind off this subject, and let your doctor do most of the leg work in prescribing the right combination of meds for your anxiety.
Your work is to just relax, and let the doctor and her expertise on psychiatric medication do the work. I'm sure you have a lot in your life right now that you can focus on that would be better for your thinking like family, kids, work, school, or even a good movie at the theaters to get your mind off things.