I have suffered for many years with kidney stones myself (35 plus years and at least 35 plus stones). I had surgery for stone removal about 35 years ago and then didn't need surgery again until just the Spring of 2015. Those are the only two times that I have had to have stones removed and have stents. The other many times during all those years, the stones have passed on their own, sometimes multiple stones at once. On the two occasions when I needed a stent after those two surgeries, I had minor discomfort but never anything near what you are describing. I am not familiar with the particular brand of stent called a jj, but I'm sure others in here will be and will respond. I wish you the best and if I was in your place, I'd be talking to my doctors to find out possible reasons for such severe pain from those stents and making arrangements somehow to never again use that type of stent. Sorry about your job too.
Thanks for your reply Unclebuck257 ,I didn't want the stent in place thus time but apparently if I didn't I could lose my kidney so I thought it was the lesser of two evils (regretting the decision now ).as I type this I'm on the emergency list to remove the stent and stones and have been on the list since December ,I'm guessing that things move slower in the uk than in America ? I keep waiting whilst taking a cocktail of painkillers oramorph zomorph gabapentin and anti-inflammation. Thanks again for your reply.Best wishes Dave