Yes, yes, and yes. I have this all the time as well. When I eat a meal, it really helps to stay seated for about 1/2 hour. I know this sound weird, but if I get up and start moving around (or if I am out to eat and then go shopping) - NO WAY- , I have cramps and pain so bad and then get very nauseous. I told my GI about this and he says this is due to the severity of my UC and my colon getting a message from my brain saying "Food is on the way". I currently take the Levsin about 1 hour before I eat. Sometimes helps, sometimes not...