No you are NOT alone.
If you were to do a search on this subject here...you would have more threads than you could even read!
As far as self-help ideas...pretty much all of the stress relief exercises here will help.
Self Help sites with breathing/relaxation exercises instructions
Panic attack relief exercises:
http://www.healthyplace.com/
http://www.stress-relief-exercises.com/
http://www.ehow.com/video_4405003_breathing-exercises-panic-attacks.html
http://www.psybersquare.com/anxiety/panic_relax_I
Practice them daily, and you should see and feel a difference.
Other practical tips are limiting sugar, caffeine, alcohol and processed foods. Cutting out nicotine and any other substances known to be unhealthy. Getting enough sleep. Exercising. Eating smaller, more frequent meals, and keeping a food diary if you find certain foods set the pvc's off.
Wishing you the best in your anxiety management. Keep posting!
S.C.