There are two things to consider when you experience stinging pain and a small amount of blood in your urine, one is that there is an infection in the urethra and the other is that there may be a stone stuck in the urethra. It is always recommended to do a physical examination to observe if there is a foreign body sensation in the urethra and if there is a sudden pain in the urethra. If this is the case, there may be stones stuck in the urethra. It is recommended to drink a lot of water and take lithotripsy medication to expel the stones from the urethra. If it is simple persistent urethral stinging pain, there may be blood or blood clots in the urine, it may be caused by cystitis or urethritis. In this case, the routine urine test, you can find that there are red blood cells, white blood cells, it is recommended to take broad-spectrum antimicrobials as the main, be sure to drink a lot of water, so that after three days the symptoms will be significantly improved.