I would say that not remembering what your feet are doing while flying could be pretty common. While in flight school, it was a big problem for me at first and I'd stay out of trim almost constantly. The best tip I got from one of my flight instructors was when you find yourself fighting the aircraft, take your feet off the pedals, fly with cyclic and collective, then look at the trim ball to see what it's doing, THEN, use pedals to make it right.
It still applies in AH, I make it a point to keep my feet off the pedals unless I NEED to for snapshots. If you constantly need to use the pedals, look at a different flying style.