I've taken 145 mg Linzess, several days in a row. I called the gastro doctor today and he told me to drink 2 bottles of Magnesium Citrate and 64 oz of Gator Aide. I did that. It's been 4 1/2 hours and nothing is happening. Tomorrow he wants me to do 2 Fleet enemas. I can't eat anything because I feel like I'm going to explode. HELP