Spitting blood?

My friend told me today that while he was in the bathroom this morning he tasted something metallic in his mouth. He spat in the sink and saw it was blood. He said it happened again later this evening. He told me he thinks that it's coming from the back of his nose and that it's like bloody nose except in... show more My friend told me today that while he was in the bathroom this morning he tasted something metallic in his mouth. He spat in the sink and saw it was blood. He said it happened again later this evening. He told me he thinks that it's coming from the back of his nose and that it's like bloody nose except in the back of his nose, and doesn't drip from his nose. I think the nasal area is connected to the throat in some way so it might make sense (?) Neither of us are sure and we're both worried.
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