Bladder problems post chemo

Hi ,I had my last round of chemo cystaplatin ,carboplatin (switched to carboplatin to reduce incidence of neuropathy) on the last round and twinned with vinorabeline as mop up chemo .This was completed in July last year .I have now developed a few minor bladder problems (microscopic heamaturia) that are about to be investigated ,I think it was the carboplatin that has caused the problem. I was just wandering if anyone else has had these problems or any chemo induced bladder ?kidney problems after mop up chemo?