2006 Pontiac G6 Front shake

It started out minor with a slight wobble at 50-60mph it exceededly got worse. I was in a fender bender and supposedly had an alignment done but then had 2 new tires put on and them balanced. I drove 800 miles home and now it is worse than ever.It shakes continually and it feels and sounds like a wobble coming from the front end maybe the front left tire.I was told not to leave out the possablility it was a wheel bearing. Also it squeeks or squeels when I hit my brakes.What could this be??