Just got back from the dentist. Is it normal for my tooth to hurt after a big filling?

The cavity was apparently almost to the nerve (I’m embarrassed to admit). I had it filled with that tooth-colored composite. I’ve had fillings before and it’s never hurt afterward before that I remember. This time it hurts, like a throbbing pain. Is that normal? Is it because of how close it was to the nerve? Or will it go away? Could it be a reaction to the composite since I’ve never had that before? I called the dentist office, but I think they’re at lunch now. I’m hoping they didn’t leave for the day, because this hurts like a mo fo.