Hi, first of all, in the hospital you don't generally ever recap a used needle. (or any open needle for that matter)
There are sharps containers all over the place, you merely take the entire used needle to the container and drop it in.
As one poster said before, it's not a good idea to bend the needle back...it seems like it would be safer but it really isn't.
I have had only 1 needlestick in 19 years that really was nothing and it was with a clean needle.
HOWEVER....before I became a RN I was a Registered Dental Hygienist who worked at an HIV clinic...this was back in the late 1980's....were were extremely vigilent and double gloved and draped, gowned, masked and visored and wrapped everything.
One day I was reaching for another instrument and my assistant was reaching for the same one...and I accidently impaled the palm of my hand on one of my scalers............!!!!! I think my entire life flashed before my eyes....I ripped off both of my gloves and it did bleed. Scrubbed it like crazy and of course called the Medical Officer in charge of the Health dept (who I worked for)...obviously my pt was HIV+ we knew that already...so, I was tested and given anti-virals....and tested at I think 6 weeks, 3 months, 6 months and 1 year...and all was fine!!!!
But that was scary! Far scarier than ever working as a nurse and I have since taken care of hundreds of HIV, AIDS and HepC and HepB patients....and other scary things.....
Just be careful....you will be fine..and don't let the fear of a needlestick keep you from becoming a nurse if that's what you want to do.