Q: Giant rock stuck dragging underneath my car for a few feet

I was driving to ventucopa from ojai and saw this somewhat rectangle low lying rock in my path. I assumed my car would be high off the ground to pass over it. I was horribly wrong. It got caught underneath the front of my car (at the speed of 25mph) and caused that loud thump noise on impact and i noticed my car was trying to continue forward but the rock was causing great resistance. A few feet down the road and i stopped my car and got out. The way my car was sounding and such i assumed i had a flat tire or a tire was ripped off. Nope. It was the rock stuck between underneath my car and the ground. I put my car in reverse and it came right out no problem. Thats when i noticed little wet drops on the ground. I rubbed it between my fingers and did not smell any scent. I assumed its water from my a/c since it was on. I continued on my journey. No sign of alignment being off. Or tire problems. Or any engine troubles. I read online that the oil pan might be damaged. Any way to check?

My car has 88000 miles.
My car has an automatic transmission.