Hi,I have IBS-C and in the mornings and afternoon I don't experience nausea so I can eat. Unfortunately by 7 or 8pm each evening I start to feel nauseous and have to take Zofran to help. Could it be the reason I feel nausea in the evening is because my the food I ate during the day has digested and is sitting in my colon unable to come out? I'm so frustrated. Does anyone else experience this problem and if so how have you dealt with it?Thanks.