Suspension problems

Hey guys I’m a 17 yr old guy and I just bought a 1970 Dodge Dart. I had it on the road for a few weeks and hit a big bump and now the front driver side corner of the car sits low. I have changed the front shocks and it sits in the same position. I noticed my front driver side lower control arm rubber bushing is squished against the frame stopper compared to the other side. When I jack the driver side corner up, it helps to level the car out and the rubber bushing is no longer squished. I was just curious on what could cause this and how to fix it. Thanks