It's been 24 days since my stent removal from a stone and i'm still having pain in my bladder and when i urinate. the urologist said no infection but my bladder he said it was bruised. does it take this long for a bruised bladder to heal?

With a ureteral stent secondary to a stone, the removal is usually accompanied by some irritation, for 24-48 hours. Pain when urinating may be from scarring subsequent to prior infection. Suggest getting a "second opinion" from another urologist.

Yes, it could take a couple days. You can request your doctor for a prescription of Pyridium (Azo) if pain bothers you too much.