I had discontinued taking metronidazole and penicillin, as I understood you
to advise: the dark coloration of the urine cleared, but toothache and 
gum tenderness recurred. No facial swelling. I resumed taking penicillin 
last evening, and the pain and tenderness have disappeared. My mouth and I
feel well. From the Internet, I've obtained the telephone numbers of
several near-by transfer stations (for the old windows) and will make
telephone calls tomorrow. Will no go to buy groceries. Will get to N-grams
later.

I hope you are comfortable.