Just one point to add, Hladna, when so much has already been said. We can help you best if you can write a brief outline of your health and your symptoms--when they began and how they developed, as well as your results from tests. Please make sure every time you leave a doctor's office, or a radiology or other diagnostics place, that you ask for copies of ALL results or films. Then the best thing for you to do is keep them in a spreadsheet. That way YOU own them, and anytime you decide to see a new doctor, you can bring them wtih you.
And if you post your history to us, in a short format, with the tests (The labs can be uploaded to lizajane.org and then we can see them through a link.--for instance, here's a link to my thyroid test results, just so you can see:
http://www.lizajane.org/PN/Users/LizaJane/lizajane's thyroids.xls
Good luck in finding answers!