I have gone through extreme anxiety over the last few months, i'm a bit of a hypochonriac.
It started with a pain in my testicle. I had this check, nothing.
Kidneys worked properly, all other organs were okay (ultrasound was done).
One week after stressing over the testicle pain, the pain moved itself to the area a little lower than the appendix area. Went to er thinking it was my appendix. This pain then travelled up into the fleshy area between the ribs and hip bone on the side. Now the pain often goes into my ribs and when I press them they are sometimes tender. When the pain goes away, so does the tenderness.
Even after a million tests, I am still worried about my kidney as I read kidney trouble is referred as pain elsewhere. All the pains have been on the right side, and occasional left.
I believe I had ulcers before and they found h pylori in my blood which is hopefully gone now.
During this time I had all the classic anxiety symptoms, mentioned here.

But can the above be anxiety related?
I found one place on the net that said after panic attacks you can experience weird abdominal travelling pains, but lately I have kind of learned to relax. Its just when the pain shows up, I begin to worry again. The pain is never really that serious (although once it was about a 7/10) its usually about 5/10 on the classic pain scale