Our respiratory system is connected to our noses, eyes, and our mouths. If your nose is bleeding and you accidentally swallow some of the blood that is coming from your nose that blood may very well get into your stomach. The design and connection of our respiratory system mean that the blood from your nose may get into your esophagus and stomach. When you cough, you may find that blood is present in the sputum. If blood gets into your stomach, it may irritate your stomach and cause vomiting.

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