The most likely cause of back pain that prevents you from holding your urine is a lower ureteral stone. When the stone moves in the lower ureter, it will cause back pain with nausea, vomiting and hematuria. When the stone moves in the lower ureter, there will be bladder irritation symptoms, frequent urination, urgent urination, a little bit of urine each time, which is caused by stone irritation. In this case, it is recommended to do ultrasound examination of kidney, ureter and bladder to confirm the location and size of stones. If the stones are small, it is recommended to drink more water and urinate more often to effectively promote the discharge of stones. If the stone is large, it is recommended to do extracorporeal shock wave lithotripsy, which can effectively break the stone and expel it out of the body. For pain and inability to hold in urine, Diclofenac suppository 50mg can be given in the anus to relieve the symptoms effectively.