back in april I rode my friends horse after not riding at all in over 6 months and the morning after my ride I had a kidney stone and had to go to the er. Now I have a horse to ride for free. I rode him on the 26th and then again on wednesday and as soon as I got off my back started hurting and right away I knew that I had dropped another stone. I went to the er and got some pain meds. I stayed home on thursday but rode today and my back started hurting again. I'm not sure I passed the stone from wednesday so I'm drinking a lot of water and taking flomex. Going to talk to my urologist about getting the other stones blasted. Does horseback riding make stones drop? I just find it odd that the 2 times I've had kidney stones was right after I rode.