Have I developed a kidney disease?

I was addicted to junkfood like Sizzlers, Saslik, Fried Rice, Chilly Chicken, French fries etc. which I ate one or the other almost every evening (sometimes there were gaps) since 2 years. But I never overate these things and ate moderately but regularly. Since the last month, I'm experiencing intense vomiting tendency every time I eat any food. (Junk food makes this worse!) So I quit junk food and I was feeling better since the last week. But yesterday I ate fried rice and I am experiencing vomiting tendency today very much. Other symptoms include intermittent but short itching on various parts of the body. A bit lethargic. Legs not swollen. Urine output seems ok. Appetite has decreased a lot and after eating a meagre amount of any food makes me very full. I'm very much scared. Am I the victim? Please help.