I'm not a doctor and I'm new to the actual diagnosis of IBS ( i didn't believe it)...but I have had what you are experiencing. I'm not going to suggest that what you have is what I had but here goes... I had EXTREME anxiety after a death in the family, loss of job and family issues. I had terrible nausea...all tests said it was nothing. I also have Reflux ( take Prevacid). The only thing that helped me get over the nausea itself was sucking on CHERRY LUDENS cough drops. Have to be CHERRY and a non-menthol type of drop. The doc said this is the same as the syrup they give for nausea ( Emetral??) . I also starting taking ATIVAN when I felt the symptoms come on, to calm me ( the symptoms make me upset which brings on more symptoms!).It worked for me. I keep Cherry Drops of all kinds in the house now. Worked for me. ALL my tests were normal too ( gallbladder, emptying tests, nuclear tests, colonoscopy, sigmoidoscopy, Barium swallows, IVP, endoscopy, blood work, CT scans, xrays). GOod Luck