ecogenic focus

I've been suffering from flank pain for over 4 months now.Mainly on my right side but...it is also fell on my left side on occasions.....

last year I was diagnosed with a heat stroke and this condition created a muscle breakdown releasing myoglobin to my body( Rhabdomyolysis)A condition in which skeletal muscle cells break down,  (the oxygen-carrying pigment in muscle)  and that created an acute Kidney failure. Fortunately I recovered my kidney functions. since then I have been in many test including 2 renal scans, 2 ultra sound, Ct, 24 hr creatine urine test. kidney stone test.... blood test and others....none of then show any problems with my kidneys....
I
In an recent Ct scan and ultra sound an ecogenic focus was discover on my right kidney (7mm)...my nephrologists told me  it was a very small cyst, but she sent me to an urologist for further evaluation....My urologist said that this was a very small focus on the CT....and that he believed the cause of my pain comes from other sources ...such as my spine..and the disc problems I previously have( was diagnosed with DDD) few years ago....herniated disc on C-2-C3...Bulge on C4-C5....a pinch nerve on C5...a bulge on T1-T2 and an  herniated disc on T3-T4.....)
question....can this, spine problems and nerve issues, be the possible source of Flank pain in Both sides of my body(left and right side Flank pain)???
Thank you .