I was driving home tonight, I heard a clunk as if a rock had been kicked up under my car. I didn't think anything of it at the time. When I went to stop at a red light, I barely touched the brake, it makes a big bang and the drivers wheel locks up now. In Reverse everything is fine, and fluids are all okay. Can anyone help with my problem?

 

It seems like it might be your caliper or your brakes are shot on that side.

 

check the caliper bolts. sounds like you lost the lower one and its jamming against the wheel when you stop.