This is so frustrating!!! I'm still having anxiety!

I got a call from my doc today that all my tests (blood and MRI) have come back fine. The tingling has gotten better, but I still have some in my shoulders/neck. I have an appt with a chiropractor on Mon.

Anyhow, I got a clean report from the doc about 9am this morning. About 5pm, I started to panic again!! Stupid, irrational thoughts (like rabies, of all things) enter my head. Why is that?! Is it possible if we have anxiety/panic too many days in a row that our body will just continue to have them out of habit??? I had been given Xanax to help me stay calm until the test results came in and once I found out I was healthy, I thought I would be okay...

Has anyone else experienced this problem?