I was in excruciating pain and sat down to urinate and the pain is unbearable at this point well i was actually urinating but with blood clots?

May be...: The depicted scenario leads a professional mind to concern possible possible ureteral stone/colic or acute hemorrhagic cystitis. So, go to urgent care or urologist asap for evaluation while the condition is fresh and easier for diagnosis. So, collect the feature and degree of symptoms with their detailed sequence of event and bring them to doc for review, analysis, more history, physicals, and...