do other IBS sufferers get constant nausea? I have been diagnosed with a functional bowel disorder following numerous tests which all showed up clear - sigmoidoscopy, endoscopy, barium enema. My main symptom is nausea especially in the morning which often results in dry heaving. so far I have only vomited a few times but I suffer from this every day regardless how my bowels are behaving. Luckily I only suffer from morning diahorrea,( with no cramping,) fatigue and headaches. I am on various prescribed medications for nausea and drink peppermint tea but I would love to know if others have these symptoms also.