After filling, generally there is no swelling. Did the doctor do permanent or temporary filling?

There might be chances of an infection still left inside that got packed due to filling and this lead to swelling. You are advised to visit a dentist ASAP and get the filling removed so that the pus is drained out of the socket. After that get the temporary filling first to look for remineralization of tooth. For more info visit the link....http://www.identalhub.com/article_types-of-tooth-pain-after-dental-filling-814.aspx