Q. My dog's (9) been bleeding excessively for 3 days now.
DAVID ELBEZE, DVM, MRCVS
A. If she started her season and then started bleeding more than usual it's not a good sign, she might be developing Pyometra (uterine infection).
I advise taking her to the vet, they will check her, possibly will perform an ultrasound and blood test to confirm this suspicion. If she indeed is suffering from Pyometra, she will need to undergo surgery in the next couple days in order to remove the uterus as it is a life threatening condition.