So my dumba** drove about about a mile with the parking break on, (not the first time) and now I've noticed a scraping/grinding sound when around 5 mph. (it may still grind beyond 5mph, I just can't hear it because my car is too loud) It also only happens when I'm accelerating, as I've put it in neutral and let it roll to a stop. The sound repeats itself faster the faster I go, and only when I'm in gear. I've coasted in neutral and I hear nothing. I checked under the car, and I've noticed the aluminum piece behind the right brake pad is bent a little bit. It's not bent much, but when compared to the driver side you can notice a difference. Dumbed-down answers would be greatly appreciated, as this is my first car and I'm not very fluent with how cars work mechanically.