I posted this over THere but no one responded, so I'll try my luck here: I have fairly bad allergies, and as a result, my nose gets stuffed up easily. Today, my nose was a little stuffed up, and after playing for a long time, I blew my nose and there was blood in my mucus. I had this problem earlier this year, but it went away for about a month. It seems to occur when I play longer than normal, or when I take a few days break and then come back and play a lot. Is it something I should be concerned about? Thanks.