Hi Nicole, you really need someone qualified to have a look as this could be serious? to give you some ideas
Loud squeel when steering turned - Power Steering pump duff or low fluid or belt slipping?
Humming sound from wheel - wheel bearing on its way out (could shatter under pressure)
Something scraping ie inner wheel arch dropped
Whistling noise usually air pipe come off engine/air box etc
If i had to guess without giving it a spin i would say one of your front wheel bearings have gone prob the near side?
Hope this helps but please get it checked out?
Craig
June 2011