I am a post-menopausal woman in my sixties.  Over the past two weeks I have been experiencing some unusual things; minor cramping in my lower abdomen, pain in both the front and back of my upper abdomen on the right side only, and most importantly, bloody discharge from my urethra when I urinate.  There is no pain when I unirnate but there is sometimes mucous accompanying the spots of blood.  Any guesses or advice?