ahnah, as long as the blood is not alot, there shd be no worry. When I'm heaty I had strains of blood from nose too, but its okie after drinking some home brew barley. I was told China Barley we can drink, but not the ang moh type. My MIL used to add 2 tbs of green beans to abt 3/4 cups of barley, it taste great! Oh, don't use white sugar to add to barley drink, use rock sugar.