the doctor may have applied a material over exposed portion of cavith for the formation of secondary dentine. It takes some time. If new dentine will be formed he will fill the cavity permanently.
If not then rct will be the option. X-ray is helpful to know about the condition.
Quit the habit of gutka as it causes lots of serious conditions like cancer
, submucous fibrosis and leukoplakia. For temporary relief from pain
you can take ketorol dt 2 tabs dissolved in half cup of water or ibuprofen