You'll be fine. In my teenage years when I knew I wanted to be a nurse, I watched them draw blood when I had mono - almost passed out. I had my tonsils out and watched them put the IV in - almost passed out. As far as others....well, at my very first clinical I watched a nurse flush an IV heplock - and hit the floor. Then I just got over it. I love sticking others now and it doesn't bother me at all. I just turn my head when I know I'm getting stuck.
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