Why Does My Hamster Bleed When It Poops?

It should be kept in mind that it could be menstrual cycle of female Hamster but there is another fact that it gets its menstrual cycle only once or twice in its life. Make sure that it is its menstrual cycle or not. May be it has gotten hurt at that particular area which bleeds. It seems as if it has got urinary tract infection that is causing bleeding. Take it to vet and describe him complete symptoms after noticing its behavioral changes.