Hi there,
I understand your concern, believe me I do...but we are not doctors here, and even if we were, one could not really diagnos someone over the net. There are some definite symptoms of anxiety as you can see on this site and even those, if you are not diagnosed with panic disorder, could be something else like a thyroid problem, etc. I encourage you to see a doctor and once he/she rules out all else, then you can rest a bit easier. Personally, as nurseboy stated, I have an intestinal problem (ulcerative colitis) that does seem to get worse when I am under a lot of anxiety. But, even with this, I underwent numerous test etc to find that out. It may be nothing, but you should get it checked out.
Best of luck,
Danielle