friday leg day

well hear goes
went to gym and squat rack was being used few people sharing so i thought ive heard people useing smith for sqauts so thought give a go
on 3rd set something went crack
no my back is killing can hardly move
i must of done something wrong doing squats didnt feel right wont be doing them on smith again
so in 2 much pain to do anything today will leave today
see how feel and maybe if better can go over weekend