Well, I found out that the delay in getting the CTA scan scheduled is due to the insurance company having to "review" the referral request. The neurologist's nurse will call me as soon as they get notice of approval from the insurance company. I've never had problems with this insurance before, so here's hoping they approve it soon.
I also now have a scheduled neurologist appointment on April 6. As I mentioned, if the meds don't start working, I'll be calling him sooner.
Later!