Wow i have the same symptoms but worse.. i feel for ya man! Ive been through hell and back the past 8 months . Ive been in the hospital numerous times , with and without insurance ( now i have united health care Medicaid) which doesn't really pay much, so the doctors are reluctant to do anything . Ive had 8 ct scans with contrast, 3 mri's , 1 bone scan, i have blood in my urine constantly ,i have a complex cyst in my left kidney ( Hemorrhagic cyst 1.7 cm with some layering ,thin septa ,and is partially exophitic and it enhances slightly ..its a 2f to 3 on the Bosniac scale ..that means 30 to 40% cancer ) i also have a hyperdense cyst on other kidney, 3mm .
I also have lung nodules 3mm, 4mm, and 7mm on right lung ,I'm in constant pain on my belly just under ribs ,on back and shoulder with burning, tingling sensation which i take pain medication (morphine) every day my rbc is low
my calcium is high ,Ive passed out numerous times,lost 50 pounds and to top it all off my father died of renal cancer at age 52, and nobody went in for exploratory surgery to find out what is going on with me ..!
Sorry for the rant, but its very frustrating for me at this time in my life too .
Now for your pain to travel from 1 side to another like me, I would definitely get scanned to start with .. i don't think its stones because to get them at the same time in both kidneys is not probable ,maybe PKD . I also saw you mentioned no blood in urine ,Because you don't see it doesn't mean you don't have it .. it could be a trace or moderate which only a lab can tell .
Good luck to ya, and hope everything turns out OK and remember doctors have a lot of patients ,you only have one , yourself.