I was in Russia for about 3 months and I got back home to the States about 4/5 months ago and for about a week now my stomach and intestines have been feeling terrible. I feel nauseated and have no appetite. Even after I eat I feel sick. My intestines cramp up and I just don't feel right. I was told that if I did get something from accidently ingesting some water it would show up about 6 months later but I don't know what illness it was. Does anyone know?