poor thing! The medication can change the color of her urine and is most likely what is going on here. As far as internal bleeding goes, you would notice her in pain and is unlikly that you would see a change in her urine like that immediatly (my kittens urine was dark green for 4 days while being on medication)
I dont think you have anything to be worried about right now, if she develops anymore symtoms then I would make appt.
Otherwise, if everything is ok I would bring it up w/ the vet during the follow-up exam.
Edited by vmatthews on April 4 2006 at 6:46 PM
Valarie Matthews -- Please click the "YES"/"ACCEPT" button to close the post if my information was helpful. Feedback & Bonuses are greatly appreciated!! You may reopen your question at anytime if needed.