Finally passed this 4mm stone after nearly 3 months.

I've dealt with kidney stones since I was 21 (I'm 35 now). I've passed so many that I practically know the symptoms by heart—I can catch them every single time. I've told my doctors, and they've spotted them on CT scans and ultrasounds; they're just always sitting there. They either look like this, or they're the smooth, white, chalky-looking ones. Nobody ever told me to catch one or get it analyzed until this last round, when I had the worst pain of my life and went to the hospital on Feb 9 with severe lower back pain. They said this one was sitting in my lower left pole, and I've had bloody urine and pain ever since. I finally felt like today was the day, and sure enough, here it is! The hospital finally recommended I get it tested and see a kidney doctor, so I guess that's the next step. Mine have usually been between 4-6mm and I've passed them all naturally, but it's constant—I always have them. And now they told me my left kidney (which seems to be the one making the stones) is enlarged, and my right kidney is shrinking, so I'm waiting on a referral to see the kidney doctor. It's crazy how something so tiny can cause so much pain. It looks like a spiky little crystal—I much prefer the smooth white soft ones, lol.