Blood in Urine

I knew there had to be something seriously wrong when my husband started passing blood clots in his urine. I have known people who had kidney cancer and this was the first sign. There can also be cancer of the bladder, as well. However, kidney stones may be the culprit as he had lower abdominal pain until he passed 2 clots this morning. If this continues we will go to ER. You can't get a doctor on Sunday any other way. Now the bleeding has stopped so we will wait a little while and see what happens.