I finished my final taxotere (docetaxel) four weeks ago and for the past week have been passing urine frequently, is this bad?

Not bad: I a ssume that the association of taxotere (docetaxel) and urinary complications are related to prostate cancer. In this condition taxotere (docetaxel) is used to contol the disease and is associated with minimal complaints. Having increased purinary frequency is related to pressure on the urinary tract outflow which would not be uncommon here.