Many: There are many reasons, but blood isn't supposed to be in your spit, so you need to get it checked out. There's a small chance this is an early sign of cancer.
Answered 9/9/2012
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3 doctors weighed in across 2 answers
3 doctors weighed in across 2 answers
A doctor has provided 1 answer
2 doctors weighed in across 2 answers
A doctor has provided 1 answer
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