what are the first symptoms of kidney damage? I just finished a tren/test prop cycle and my kidneys are killing me. Got a pain in the front also near my serratus muslce. I also get a burning pain down my lower back with a dull ache. mostly on the left side. I used to sweat puddles and pools in my sleep and i'm scared i got too dehyrdated at night and it affected my kidneys. I'm too scared to goto the doctor.