I m having chornic constipation and the gastro put me on samples of amitiza . I took one the first day, he said to take with meal. Well , the second day i ate cheerios and bananas and took one pill. I felt sick and nausea for the rest of the day. The side effects is nausea and or dirreaha. My question, will this nausea go away once the body gets us to the amitiza or did i eat enough or not eat enough? Thank u.