Cranberry juice doesn't actually help.
Drink lots of water or beer or juice.
I started moving a stone at the end of November at the same time I got a kidney infection.
The pain was a 3-5, whereas they normally get 8-9 on the pain scale. So I figured it was just tiny small stones passing.
Wrong.
In December my blood pressure started spiking, as high as 195/125.
VERY long story short, my stone is a "silent" stone. It got partway down my ureter and blocked it. I developed hydronephrosis (swollen kidney), which means I likely have significant permanent kidney damage. They gave me Cardura to lower my blood pressure and to open up the ureter so it would pass, helped with the bp, didn't do shit for moving the stone, though it probably helped reduce the pain.
On April 8th (!!!!) they finally did shockwave lithotripsy on me. First day I passed a few sand-sized pieces, but then the pain went way up, stabbing and burning. I finally passed the last chunk of that stone last night, so it was two weeks of 5-6 level pain throughout my groin and dick.
It took 5 MONTHS to clear that stone. The pain wasn't horrible bad, but damn, it fucked up my kidney, and that's my good one. The other kidney was damaged in a car accident when I was 14. So fuck.
OP -- Get your ass to a doctor, get that stone x-rayed to see how big it is. My son-of-a-bitch stone was only 4 mm, usually considered "passable".
If you got a stone that big or larger, have them do some kind of procedure to get it out of you.
My first stone, 2 years ago, was small, about 2 mm. Passed it in about 5 days. 4 mm stone took 5 months.
I carry Vicodin in a key fob so I always have some on hand. Just in case I'm travelling and a stone starts fucking with me.