AstroJuno

I had my beagle girl desexed on Thursday last week (she's 9months old) I noticed yesterday that she seems to have blood on the hair near her vulva and she has it again today. Is this normal after desexing? or should I be taking her back to the vet? She did a wee on the carpet yesterday and it didn't have any blood in it- so I don't think there is blood in her urine as such. It looked thicker than it would if it was in urine- more like menstrual blood?