Oil light on after metal hits under car.

2001 Honda Accord 4 cyl.

A piece of metal went under my car getting off the freeway. About 30 seconds later the oil light came on. I got to work, maybe a mile, car was running fine. No oil leak. As soon as dealer opened I got the car to them 2 miles. While driving the oil light blinked or stayed on and then the check engine light came on. Dealer told me the oil pan was damaged and a strainer inside also needed to be replaced. Fine. Pick up the car the next day. Drive it for about 2 miles check engine light comes on, then the oil light starts flashing turn right around get back to the dealer. They take it and come back and tell me there is some VTECH valve inside that probably got ruined and they need to replace it. Ok. They come back and tell me they want to keep my car a few days to see if serious damage was done to the engine because I was getting oil to my engine! They drove it 4 miles after the initial fix, I probably drove it 7 or 8. The car ran perfectly fine the entire time.

Is it possible I have destroyed my engine!