My doctor prescribed 145 mg Linzess over a month ago. The first week, it seemed to completely empty by bowels on the 2nd day but after that I am lucky if it works one day a week. I also take a fiber supplement, drink a lot of water, exercise daily and run 10 miles on the weekend. I am experiencing horrible smelling gas, bloating, and mild cramps accompanied by bloating and worse constipation. Should I stop taking it and save $20 a month?