After three years of pain and constipation, I was diagnosed with IBS last summer. Then, suddenly I went from constipation to the other end of the spectrum. (ha) I lost more than 20 pounds in just a couple of months.Things evened out by Christmas, and I was feeling better. Then, this spring, I started having constipation again, and I have gained 15 pounds in less than three months. It is really discouraging!I want to lose the weight and end the constipation. My doctor will not give me zelnorm because of my history of diahrrea. I tried hyoscyamine, but it made the constipation worse. Fiber makes it worse as well; I was in horrible pain after following the doctor's suggestion of a fiber pill regimen. I've started walking 2-3 miles a day to try to get the weight off, and was hoping it would help constipation, too, but so far just have bad cramping during my walks. I keep walking, though!I'm new here. Any helpful suggestions would be welcome!