Good after noon. I just got back from the Dominican Republic and the night before I left started having moderate abdominal cramping. That would be Thursday night. Looking back, I think I actuallystarted feeling different at dinnertime when I had no appetite. I was very careful not to drink the tap water and used tap water to brush my teeth also. I m still having the cramping and am very tired. I m not having any nausea or diahhrea. I m able to stay hydrated but not eating much at all. How long should I let the cramping go before I see a doctor. I did eat salad and steak tartar the day before the cramping started. Thank you in advance.