I have been experiencing nausea and vomiting every evening for the past three days. I feel fine in the morning and can eat breakfast and lunch, but by late afternoon I start feeling sick. I can t keep anything down. As soon as I eat something, I throw it up. I have been eating different things each day, and my family has been eating the same foods with no problems. There is no chance I am pregnant, and I had my appendix removed 30 years ago.