I wouldn't call it common but, still a frequent (if that makes any sense) complaint from watching this board over the years. It is a side effect to let your doc know about. There may be something better than aspirin or ibuprofen depending on your circumstances.
DX 5/6/2008 TAG3 papillary tumor .5 CM in size. 2 TURBS followed by 6 instillations of BCG weekly with a second round of 6 after a 6 week wait.