Saving Drizzy

Hey guys, my cat Drizzy is only 3 years old and he is very, very special to me. After seeing him in a lot of pain and leaving drops of urine around the house I knew something was wrong and took him to the hospital. I have now received the news that he has kidney stones that are blocking his bladder and he has already been sedated several times and stayed over night for 2 unblocking procedures which have both been unsuccessful. 

After getting off the phone with the hospital today, I have received the news that they will be bringing in a specialist which will be very expensive and I can really not afford this luxury.  The surgery will be an additional 5000$ to the 3000$ I have already paid for the blocking procedures.  Im afraid this is a surgery I just cant afford and I have run out of options. I just want him to be free of pain and the drugs and to be happy and healthy again. 

I am 20 years old and already paying for college so I am in desperation for any help possible. I love Drizzy so much he really means the whole world to me and I want to fight along side with him for as long as possible. 

Anything at all will be greatly appreciated and I would just be so grateful for anything or any words of advice. everything will go towards the cystotomy surgery. 

Thank you so much
Parker