I've also had similiar pain for the past 9 months. It started out in abdomen and now I have lung, eye, and head pains(I also have the crawling sensations in my head). I've also been to countless GP's, and done every test in the book. I have seen white worms in my stool many months ago, but nothing since. I am currently doing a send out lab with http://www.parasitetesting.com
at the end of the week. I've tried almost everything herbal, with some things giving me temporary relief. This all started after visiting the Carribean.