Kidney Stones - Diabetes - Constant Urge To Pee And Nausea

Since last Weds evening, about 5-6 days ago, I felt like I was getting a UTI. Had persistent urge to pee, every 20 mins or so, all night, and sometimes I really had to go and sometimes just a dribble but felt like bladder not empty and I'd pee and immediately feel like I had to go again. Had some burning and general discomfort. I also felt like I might have a yeast infection - I have type 1 diabetes (24 years, am almost 45 yrs old, female) and get them often. So on Thurs symptoms still were there so went to gyno to do a urine sample that they said they'd send for culture. They gave me prescription for antibiotics, which I did not fill till the next morning - on Fri morning, still had frequency to pee and also some on and off left-sided flank pain, some lower back pain, some twinges on and off way low in my urethra area - that was all new. Started antibiotic on Fri. felt a tiny bit of relief but had reaction to Macrobid (sp?) so doc called in Cipro, which I started on Sat. By Monday still no better, was still peeing constantly and having the flank pain and back pain on and off. Went back to gyno who said my urine culture came back clear - no bacteria so this was not a UTI or kidney infection. He did say there was a trace of blood in the sample - but I have not seen any blood in my urine myself. Doc performed a pelvic exam to rule out ovarian cysts and uterine fibroids and all was normal. So he suggested it could be a kidney stone, to see the urologist so that is where I am. Still miserable and peeing constantly.

I have never had kidney stones ever. Today still peeing all the time and some on and off back pain, hip pain and even some mild thigh pain - all both sides although flank pain is more left sided. It all comes and goes and is not excruciating and when my husband had a stone, he was in terrible pain and rushed to ER and ended up passing stone that night.

So here's the weird thing - since Sept I was experiencing upper right stomach pain, right under my ribs, nausea after large or fatty meals, constant burping, on and off constipation. So I had an ultrasound done to check for gallstones by my regular dr - everything was normal. They checked kidneys and no stones showed up on ultrasound. I am scheduled for a HIDA scan for gallbladder next week bc still having those symptoms but this urinary stuff is new. All blood work normal. Upper GI endoscopy normal also.

I am a mess! And I just want answers. Not sure if it's all related or I may be dealing with 2 separate conditions or maybe what I've been experiencing as gallbladder pain has been kidney-related all along.

Do all kidney stones show up on ultrasound or is it possible to still have them and have them not show up? That only a CT scan will catch?

Could the constant peeing still be a UTI/kidney infection without bacteria showing in urine culture?

I now have a yeast infection from the antibiotics and treating it. Could it worsen the peeing problem?

Has anyone ever had kidney stones that showed symptoms like this for a long period of time before the excruciating pain of passing happened? Or could this be a problem w/my kidneys and function? Being type 1 diabetic, I worry about this but all my regular kidney blood tests are always normal - I see doc ever 4 months for that.