Well... yes and no, but that is not your fault. The problem is that Wessely & co play a double-speak game, and are intentionally ambivalent, especially lately. Lately, their trickery runs on these lines
"Yes, there are real somatic diseases you may have, but your "disease" is somatoform - for which reason you (credit our medical scientificality and moral excellency: you should, since we have degrees and understand you better than you understand yourself) will NOT get any bio-medical investigation to find out whether what you think you have is so, but instead you MUST do GET and CBT to keep your dole. We know the likes of you, matey! Trust us! We are UNUM in that!"
ME Agenda has an excellent thread on the DSM-5 which I recommend in this context. (I agree it does not make pleasant reading, but then that's not her fault.)