yes thank.youmy brother has a cancerous tumor on his groin and couple blood clots, he is home pending radiation treatments with tumor that is wrapped into his right leg muscle by femoral artery etc.. 58 years old and a former sub arachnoid brain bld brain trauma from 10 years ago... my major question is simple but i though i would give you some info there... he is home on coumadin and i didnt get the last two pt/inr results yet but tonite he sat up and looked very uneasy and started shaking... he stated that he was feeling cold but wasnt cold... to me i wondered if this was a effect meaning he could be bleeding or his blood be too thin .how worried should i be... i calmed him down and he is now covered up and resting well... is this normal