Can a person with anxiety suffer from the following symptoms for several weeks to a month (off and on or non-stop)?...

* Constricted feeling in throat (sometimes a "lump") but I'm feeling it below my collarbone - normal?

* Feeling like I can't always catch my breath

* Stiffness on left side of neck

* Prickly or needle-like jabs in my back/spine or neck a few times each day

* Feeling anxious and obscessing that I have a disease, worrying, looking up symptoms, fretting, etc. Fretting over every little sensation (flutter, tingling, ache, etc) constantly.

* I've had low-grade fevers (99-100) off and on (but mostly off) for about 10 years now and the doctors never seem to care ("oh, some people just run hotter" or "it's probably just your allergies").

I was just wondering - thank you