I will be a brief as possible but I read a post from notibs 14 days ago entitled 'The diagnosis IBS is nonsensicle' and I read it with interest. She is an American Doctor and like us got so fed up with being fobbed off by doctors that she decided to research into this herself. I agreed with all of what she said - you should read it as after reading it I had an appointment last night with my Nurse Practitioner for a regular Smear and I said to her, whilst I am here I just wanted to say how fed up I am with my IBS - it's getting worse. I then went on to say that I had read the post on here and she said yes, it's a bacteria that you may have in your stomach called helicobacter pylori and it's possible you may have it. She then proceeded to give me a pot for a stool sample and said that if it comes back positive then I will be given 3 lots of strong antibiotics. My Nurse Practitioner was really lovely and listened to everything I said.
I am now waiting for the results and will let you know what they are but in the meantime I am keeping my fingers crossed. Just thought that it may be worth trying this with your doctors and if they don't listen - insist.
Best of luck all