Rolled into parking block

I was on an incline and turned off my parking brake and went to reverse, I guess the car failed to turn over because I was hitting the gas but just rolled forward towards the parking block. I hit the brake but I don't know if I hit it before or after my tires hit the parking block. Anyway my air was blasting so high because its 90 degrees and I didn't hear the engine fail to turn, so I started it once I realized and reversed as usual. I heard a weird noise but wasn't sure if it was my tapping of the gas or the underbelly scraping. I didn't go over the block with the tires, like I said I hit the brake but didn't want to get out to look because putting it in park and lifting my foot off the brake would have rolled it forward even more. I got home and looked under the car, I noticed a few drips of what looks like oil, but keep in mind I just got my oil changed earlier today and I am not sure if they made a mess or if I have a leak. So I looked under there and everything honestly looks the same, nothing is hanging, nothing is loose, and I wiped up all under there so that when I check next time I will know if something is leaking. Let me know what you think, this car is super low. I drive an 2005 Jeep Liberty truck, this is my grandpas car and I am not used to this incredibly low car. Do you think I did any damage, and if so what? Should I take it back to the Valvoline tomorrow and just ask if they can peak at it under the bay?