I have been diagnosed with Hypothyroidism and take medication regularly . From what Doctors have told me my thyroid is inactive. My numbers are good only with the hormones in the medication. I have read some symptoms of hypothyroidism and they appear to copy IBS. I am a little confused the severe bloating the weight gain the severe diarrhea. not to mention the gastro pain How do I know if it is Hyperthyroidism or IBS especially when my primary care doctor does no believe IBS is a real diagnosis. For the record I also have delayed gastric emptying and GERD