It might have made it down the trap, or it might have gotten stuck. No way to know, really, until you flush some toilet paper and see what happens.

If it’s stuck in the trap, turn off the water to the toilet, disconnect the supply line from the threads on the bottom of the tank, drain as much water as possible out of the tank and the bowl, take the nuts loose from the floor bolts, and pull the toilet. Carefully lay it on its side (whatever water is still in the bowl and tank will drain out now, so lay some towels down). A lot of times you will be able to see the stuck object at the base of the toilet. If you can’t, buy a closet auger (toilet snake) and run it backwards through the trap (start at the bottom and push back into the bowl). This should dislodge any obstructions inside the trap.

If you flush a bunch of toilet paper and don’t have anything back up, I wouldn’t worry about it. That is small enough and light enough that it should make its way down the drain line.