I had 3 kidney stones removed 4 weeks ago and had a stent placed which is due to be removed in the next 2 weeks. I am in a lot of pain and my bladder is constantly full. I am frequently passing blood when I wee, I have been given buscopan and codeine for the pain but is it normal to have a lot of pain for so long after having stones removed I was told I should have been fine after 3 days but this is not the case.