my friend is male 66 three days ago he went to a out day hopsital in order to have a large,to large to pass kidney stone blasted in order to be able to pass these pieces im suposeing. The problem is this male has a blood clot behind his heart and has been on xarelto as u know is a blood thinner. two days before the blasting he began passing a lot of blood while passing his water. At that time he skiped a dose of blood. thinner medince.. Since he has had the stone blasted,which took place last wed. 03-01-2017, last nite 03-04-2017 the heavy blooding hss began again. Again today he skipped the blood thinner medicine. Hes telling me that the dr. that preformed the blasting, hasn t told him what to expect, that I fine very hard to believe, u know. My question to you what is he to expect and is the blood thinner whats making the urine so bloody? Tks T. Martin