...about that. You sound VERY kidney-stoney! Remember, you can still have a stone without gross blood in the urine. I'd go get checked. You need a diagnosis, there are some REALLY bad snakes in those weeds (AAA?)! Even if it is "just a stone", it helps to know location, size, etc. Be sure that they actually send it for analysis after you pass it. Some types of stone are amenable to prevention.
Motrin really is your friend with stones, helps to relax the ureteral spasm.
Keep us posted.