I have fever several times a day with pressure in lower abdomen?

hi.i am 23 year old girl.i had undergone nephrectomy 10 years ago of my left kidney. everything was alright in previous years.in last year in july i felt pressure in my lower abdomen. then i got typhoid. it was minor. i took medicine. i felt ok.but now i got fever again and it just in between 99-100 and only for one hour or so many times in a day.i also felt pressure in lower abdomen sometime.feels fatigue without work sometimes. backache sometimes.sometimes feels pain in uretors.what u suggest???