kidney problems?

Last week I was rushed to A&E with severe pain in my right hand side and under my ribcage, after 4 ECG's (which were fine) it was thought it was my gallbladder. I was sent for a CT scan and and Ultrasound scan, the results said that my right kidney was smaller than my left, and my gallbladder was swollen which showed higher level of normal, meaning slight infection, now I wasn't told if smaller kidney was something I was born with or if this is something that is happening due to my diabetes. I also had a urine test which showed +1 blood and protein. Nothing has been explained to me, and I was sent home, told to take another urine sample to my GP and if still showing blood/protein then they'll put me on antibiotics. I still have the pain but taking paracetamol which takes the edge off but the ache is still there.

So does anyone have any suggestions on what is going on please, tried to get a GP appointment and nothing available till end of June.

Thanks

Ps. I've been type 1 for nearly 52 years.