Some doctors use IBS for EVERY ONE of the functional bowel disorders.It doesn't matter much in the clinic as they treat based on symptoms rather than which label they stick on it. There are several functional bowel problems, IBS is the most common and most of the others are IBS - a symptom of IBS.If every stool was always normal, ("pretty normal" can still fit a change in stool consistancy or frequency, you don't need full blown diarrhea several times a day every time you go, just a change from normal) then it generally fits Chronic Functional Abdominal Pain. Which is basically all the pain and discomfort of IBS but normal bowel habit.That you have D that is triggered by emotions fits with IBS. Some IBS triggers are physical, others are emotional.It may be a bit early to label you IBS as the diagnositic criteria usually say wait 6 months to see if it goes away, first.How they come to the conclusion? Similar to Fibro, actually, you seem to think that is real, even though a lot of people think it is a "fake" diagnosis when they don't know what is wrong, really, it has a lot of the same diagnositic issues. There has been a lot of problems getting doctors to believe it actually exists over the last couple of decades. Patient has specific symptoms, Patient doesn't have other problems that explain the symptoms. I'm not sure what you are seeing as not at all what Rome criteria says IBS is?1.Patient complains of stool consistancy and/or frequency changes.2. Patient complains of abdominal pain and discomfort. (usually 1 and 2 go together, and often the pain goes away after a BM, but it doesn't have to)3. Patient does not exhibit any of the red flag symptoms that mean it is probably not IBS. (Are you losing weight all out of proportion to what you are eating? Starving yourself and losing weight is normal weight loss, this is abnormal weight loss. Do you have bloody stools? Do you have pain that wakes you from a deep sleep in the middle of the night? Do you have anemia? Do you have an elevated sedimentation rate? Do you have a pathogen in your stool? Do you have repeated bouts of watery diarrhea at night?)Red flag symptoms tend to point disorders that are not functional. Having some but not all of the IBS symptoms usually means one of the other functional disorders.4. Medical tests based on what needs to be ruled in or out are done. Different doctors have different ideas of how much testing you need. Typically in clinical studies if the patient ONLY has symptoms of IBS and has no red flag symptoms at all no matter how many tests you run the tests are normal and the patient ends up with an IBS diagnosis. Only a few % of patients have anything, and some of those have anatomical variations that do not explain the IBS as other people with them are normal.Some people will with repeated and extensive testing have their IBS get worse. The stress of the tests and being told over and over again that the results are normal can really do a number on some people. Some people will not believe it could be IBS unless they have every test known to man.How many tests you need to believe it is IBS is up to you, and it may not match what your doctor needs to make the diagnosis.Usually they run at least some blood tests to see if you have inflamation in the body. Mostly because that is one of the big red flags as well as anemia that something else may be going on.If you symptoms are really typical they tend to do fewer tests. If you have some red flags they tend to do more tests.FWIW that you have a diagnosis of Fibromyalgia may factor into getting an IBS diagnosis as that is common for people to have both problems.Woman may also want to do a check with the OBGYN as some reproductive organ issues can cause pain, bloating, and other GI symptoms.It really is not any or all symptoms we can't explain no matter what the symptoms are even if the patient has obvious symptoms of something else.K.