Heavy bleeding in urine since 3 days.

Hello Sir, I had undergone surgery (URSL) for a Uretic stone of 7.2 mm on 23rd November last month. After the surgery they discharged me on 25th November and until then everything was good, but the next day which is on 26th morning I found blood in first urine with a lot of pain. I rushed to the hospital again and they gave me urispas and alkasol after which bleeding stopped on 27th. Again, on 9th of December at 3 AM I started feeling heavy pain with lots of blood in urine. Again I came to the hospital and they admitted me and they are giving me Tranexa Acid, Zerolod Sp 100mg and alkasol since last three days and I am still having heavy blood in urine. They had placed a stent and now telling they will remove after 1.5 months. I am very worried, could you please help me. Thanks.