I have had this a few times in the last 2 years or so. It feel like I have a - please excuse the description - huge dry bogey up there, but when I blow my nose it is a lump dried blood (sometimes I het a tiny nosebleed too). It is quite sore up there just now (think 'sticking a finger up your nose after chopping chillies' and you'll get the idea).
Does anyone else get this? I don't generally get nosebleeds.
Sorry to be so gross...