I was recently admitted to hospital with acute renal pain on admission I was assessed and admitted to the surgical assessment ward after being given oromorph in A/E with a diagnosis of ? Renal stones. The dose of oromorph did not alleviate my pain so the dose was increased and a. CT scan was arranged for the following morning. My INR was 2.8 my previous one the week before was 3.8 and my D-dimer was normal my normal dose of warfarin is 9mg but with the drop I said that it should be 11mg I suggested the drs consult the haematologist but they left me to manage my own medication of warfarin and aspirin. The next morning I was violently sick and felt like passing out so was prescribed ondansetron for the nausea, my CT scan showed no stones and the pain settled so I was discharged with no follow up. I asked the registrar if he could repeat my INR before my discharge but he said no because it would take several hours to get the results back. I explained to him that it was OK because I would get an email at home when the result was available and I would then log in to NHS DIRECT to. Get the results so I would know what dose of warfarin to take but he said that was not possible consequently I ended up going home on a weekend without getting my bloods done. I am still getting pain in my back associated with passing urine which my GP thinks is muscular.