I tripped and fell two nights ago. landed on my right side on top of a small metal litter bin. it did not break. the bin connected with my lower back, right side. I was able to get up and put myself to bed. next am very hard to get out of bed. sharp pain on lower right side of back.when trying to mobilise from one position to the other (supine to sitting up) sore when I cough, pain 6-7 score. no pain when urinating, p,u, normally, urine very concentrated this am on first urine. taking tramadol 100mg plus paracetamol 1g this am with a yet to notice effect. is this damage my kidneys and will it resolve,any suggestions for pain relief that target these areas? thanks wayne