iv'e had kidney failure due to antibiotics, (also have had kidney stones, very painfull) your problem might be niether one, but should be checked out. How about going to see your primary dr. might want you to have a sono of your kidneys, in a case i drink lots of water minm. of 6 glasses a day up to 10, even overnight ( dr. told me kidney stones form overnight) i have been worried about so many things and most of the time it wasn't what i thought... Hope you feel better soon and dont wait for your c/f drs. go see your family dr... Joni.. 55 y/o f w c/f