Hi everyone who kindly replied to my queries and anyone who may be interested in the following.
I saw a specialist yesterday and, as expected, he told me that it is highly probable that I have CD but that, however, to be 100% certain I will need to undergo an endoscopy for biopsy. So I'm back to my beloved, but probably for me harmful, Mediterranean-packed-with-gluten diet!
I also asked the specialist about the Genetic Testing for Gluten Sensitivity and CD. The specialist seemed puzzled and apparently had never heard about this test. He asked me to print out the webpage where it is advertised and bring it with me next time I see him. In this regard, I read somewhere on the Internet that this -quite expensive- test would only tell you if you "carry" the gene of Gluten Sensitivity and CD, which does not always mean that you have developed or will develop these pathologies. Hope that helps.