The toothache lasted for a few days, but is gone now. Ohhhh, that's a relief [*]. And an even bigger relief: I got the PhD scholarship I had applied for! :-). I'm starting in late February next year.
[*] Well, it's largely gone. Prepare to find out more about my teeth than you wanted to know: it's a long story, but the problem isn't actually a cavity, but a funny shaped gap between two teeth that causes food to get stuck there and from this, gum pain (and don't think that gum pain can't be as big and burly as tooch ache...), which ultimately can't be fixed (short of removing teeth or something equally drastic).