I hd blood clot on my throat and which comes from nasal cavity. I did 3 times endorsecopy and CT scan and all doctor said sinusits. After taking antiobiotic still bleed and i dont know why not getting better. I dont have any headach, fever, flue. Only i see blood on my throat. It comes like a straight very thin line. Did any one have this issue and plz help me to get out this stress.