Hi there, arashid!

I've been to multiple dentists over the years and I can tell you that some are just better, I think, at managing their patient's pain than others are (regardless of location).

The dentist I first went to at the beginning of last year ignored me when I said I was in pain during a filling, but the endodontist I had to see, later, made sure I didn't feel a single thing during a root canal procedure (which is supposed to be more painful). I also didn't feel anything when having other cavities filled by a different dentist earlier this year.

In regards to the needle ache, I've had 2 separate experiences where the site of an injection was sore for several days (almost a week in one case) after having dental work done. If you're concerned, I'd say by all means call your dentist and ask, but I don't think it's unusual if the needle was in a sensitive area (it especially seems to be the cheek area, for me).