ive been drinking alot of fluid for the past month,the same amount as i always do,actually even more than useual ,and i feel the urge to pee but when i go to pee i only pee a little bit,im taking medicene nitrofurintion for a bladder infection but it aint working,i still aint peeing a normal amount like i always used too,this is the first time this has happened to me,i have had urinary tract infections before and when u pee it burns,this dont burn,it just come out a little bit when more should be coming out ,could i have kidney failure ?