Transmission grind in 1-3 gear at low rpm's?

I drive a 1992 Honda Accord EX. I Hit a speed bump a little too fast and hit the ground really hard. (the car is lowered about 4- inches from stock). Now when I shift in 1st through 3rd gear there's a grinding noise coming from the left side and you can feel it too, but when I'm above 2 rpms the grinding stops. I know my car might be ****** at this point, but I want to know the exact problem so that I can possibly fix it or know if I should get rid of the car.

Hi facts have to be faced sorry but after now some 25 years this old car has come to the end of it's life to to be saying goodbye.

You need to get it on a lift and get it inspected.
It will probably be expensive.
Racing cars are set up to a suitable ride height for the circuit.
For roads standard is the best answer.
Lowered cars have no advantage for road use.