Loud Thud Feeling When Braking

An Update: I loosened the bolt and pulled the rod out, thus extending it. I extended it roughly 3/8''. When I drove I noticed the car upshifted at a higher speed. Now, when braking, I first noticed a little thud, but not nearly as bad as before. While driving around there were no issues and the car accelerated and braked fine with no bumping issues.

When I went to park the car, shifting from being in Reverse to Drive, and moving into my spot I felt a little thud like before, nothing bad, but it sounded like it came from the rear/underside of my car.

I'm going to wait a few hours let it cool down and drive it again and see/ maybe expand it a little more .