Hi, I'm new here, but have been and IBS sufferer for years. I've been able to manage my symptoms with Immodium and haven't had any major problems. However, this past week I've had a really bad flare up. I know it's partially because of stress and anxiety. But, I've also been feeling exhausted and weak. My arms and legs feel like weights. The doctor I went to visit yesterday said it's probably because of the diarrhea and that I haven't been able to absorb enough nutrients. Just wondering if anyone else out there has had the same problems.