I was eating chapathi when I saw a drop of blood on it. When I saw I have already eaten it. What to do? Can it cause hiv or hep because it was someone else's blood. And I have a small cut inside my mouth and on my lips. Can the blood go inside these? Are they open wounds? Please tell. And while eating it also I bite the inside of my mouth without knowing. So can the blood go inside this fresh cut but the cut is small. Can it cause hiv or hep?