welcome to healthcare magic,
after going through your question there seems 2-3 possibilities regarding pain, to be specify is difficult without clinical examination and xrays, but we can guide you through to come to a diagnosis,
possibility no 1: the tooth with the filling you recently got could be a reason , as you mentioned was fractured tooth , so if you feel pain on pressing the tooth with your finger or while biting onto something..should be evaluated, for a fractured tooth or filling too close to the nerve
inside the tooth which could also cause pain after a few days...
possibility no 2: if you experience dull pain in all your teeth as you stated could be due to gingival inflammation
...if you see bleeding gums
after you brush or spit you need to get scaling done for the same.
if you can email me a xray of your filled tooth or an opg , we can help you better,
and one more thing stolin is a gum paint used for gum massage
not on tooth as you mentioned