Q: I hit a diet on the underneath front end and there was a medium bang everything seemed fine and I drove 100 miles with no probs I

I hit a divet on the underneath front end and there was a medium bang, everything seemed fine and I drove 100 miles with no probs, I have now noticed a Loud clunk sound lasts 2 seconds from inside the car around the gear stick and gear stick shakes for around 2 seconds also, do you know wot this is please and is it safe to drive please

My car has 60000 miles.
My car has a manual transmission.