@scottt23 -Stop freaking out! Your errors are too small to be seen with a microscope! College folks will not notice them, or–if they do–they won’t care. I promise you that, if you don’t get the admission news you want, it’s not because of these tiny oversights.
Of course, if you end up submitting additional applications, be sure to correct your Common App first. But, meanwhile, don’t give a second thought to the minor mistakes you’ve already made.