Hi. I am 21. I was at the doctors on Friday and received antibiotics for a UTI. On Monday I went to the out of hours doctor as my doctors surgery was closed she gave me antibiotics again and told me I have a kidney infection. My back and stomach are very painful. I feel sick all the time. My stomach becomes very swollen after eating . I am freezing one minute and sweating the next. I have the doctors today again at 3pm. Does anybody know if I should still be feeling like this 6 days later?