Thanks for asking the query,
Pain in the tooth indicates infection of the tooth ,you have already filled the tooth so there are chances the the restorative material is causing some irritation or the infection has involved the pulpal tissues .
I would suggest you to take complete course of antibiotics and analgesic
If the pain does not subside , i suggest you to get a checkup done and take an x-ray of the tooth, depending upon which the treatment will be decided .
If the infection is deep you have to go for Root Canal Treatment of the tooth followed by prosthetic crown placement .
Pain in the jaw and cheek can be radiating pain , take rest .
use antiseptic mouthwash gargles like chlorhexidine
twice daily .
Maintain a good oral hygiene .
Hope this helps out.