Questions after cystotomy

My cat had surgery Tuesday but one of the stones was lodged in the Urethra so I had to take her to a specialist and the remove it on a second surgery on Wednesday, it is now Sunday morning and she still has small amounts of pee and after she leaks some drops with blood
How long after surgery did u you notice blood for?
Thank you for any information

Last year one of my girl cats had 5 bladder stones removed and she was straining and peeing small amounts for almost 2 weeks. My vet said it usually takes about a week for them to start urinating totally normal but it can vary by cat. It's also normal to have blood in the urine for a week or so after surgery but if your concerned it's always best to call the vet.