Help everyone. I have just woken up from a nap on the bed to spit blood. About the size of a 10p piece which just lessened into brownish colour then nothing ( a bit like after cleaning your teeth. No apparent reason I can find no trace of my nose having bled whilst I was asleep. My INR is 2.2 and I am due to take my warfarin in 10 minutes, Anyone relate to this?