Lana1,Stress and Anxiety are my triggers. Nothing else seems to trigger me....but STRESS and ANXIETY sure do.Nausea, Muscle Aches and "D" (actually any abdominal problems) are all symptoms of stress and anxiety. When I am having IBS "Flare ups" I also usually have some nausea, muscle aches, "D", "P", etc, etc. The Nausea and muscle aches are not from the IBS but from all the symptoms are related to the stress and anxiety.FYI... Once I get into a Stressful time or Anxiety Ridden time it will take me a long time to completely get over it. It has taken up 4-6 months to get completely out of it. So the back pain from July could be from that. HOWEVER...that being said...it could be that you just twisted your back getting out of the shower and it's taking it's time healing.KARL