Catch your urine stream in a fine meshed strainer. If there are particles, check consistency. If they feel hard or gritty you are very likely passing small stones and that would account for your symptoms. Also, drink lots of lemonade. The acid in it will help dissolve stones and also kill some bacteria. And yes the Xray should be a definitive test for any stone(s) still caught in the urinary tract. You do NOT want a full-blown stone attack and blockage, as the pain is pretty close to the 10 at the top of the scale right up there with "stepped on by horse" or "bullet wound to abdomen." Not much hurts worse, and it can land you in the operating room as well.