While in preflight and with props spinning low power a small soccer ball rolled down sidewalk into the inspire. Not forceful but stopped one propeller for 1-2 seconds. Propeller started spinning right back. Didn't notice any speed differences. I shut it down a few times to ensure it was okay. No warning messages. Flew it for 3/4 battery without any problem whatsoever; however, at the 3/4 mark got a "motor obstructed" warning. Promptly landed. I don't notice anything weird but worried prop being stopped did some type of damage. Any advice?