This is such a common symptom you need not worry! It just proves that you have excess gas passing through your large intestine. You doctor is not quite correct about the take more fibre thing. If you take too much too fast you will indeed get more gassy and hence more discomfort. Plus a lot of IBSers find fresh fruit and veges to be a trigger for their symptoms. I suggest you stick with the Metamucil but take a week off and then slowly reintroduce it. Take half a dose for a week, then a full dose etc. And you may never need the full 3 doses..just let your bowel see what works for it. Oh and if you take your dose at the same time every day this will help prevent some of those symptoms you describe too.