When I ate my food there was someone else's blood on it. So I without knowing are it. Then there was something stuck in my teeth when I spit it out. So a few drops of saliva and I think maybe that blood on the food mixed with saline fell on my arm. Then when go I g to sleep I without seeing that kep my head on my arm. I placed my ear there. Then I felt something wet so I saw a few drops of saliva mixed with little blood. So a little bit of it went inside my ears. Can it cause hiv or hep? What should I do?