soop
Dickens Thank you yet again. Phone call this morning from the stoma nurse in Glasgow. She confirms diagnosis. All sorts of changes to be made...and, I'm to be measured for a super-sexy support thingy. I know what to watch out for. Any discoloration needs urgent attention. 
Ah, so pleased you got an answer at last!
Yes, the discolouration could indicate a lack of sufficient blood supply, so it's very important.
But I hope those super-sexy support thingies help, they do certainly seem to relieve the symptoms.
Hope you feel more comfortable soon and can resume your normal activities. Good luck dear soop! x