Nothing: Many people are like you, most get over it with time, others don't. Reason why some people don't go ito or quit nursing or medical school or sugery. Suggest you watch great british tv series "doc martin", available on netflix. About a very astute british surgeon who faints at sight of blood & becomes a family practioner in a small town in cornwall, england. So don't fret.
Answered 4/11/2013
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