The pain is likely due to the food getting trapped inside the existing cavity and irritating the tooth. Since the jeera has been removed and the pain is mild, it may settle, but the cavity itself needs treatment.

The pain may be due to irritation of the cavity or surrounding gum after the jeers became lodged in the tooth. Since the jeers has been removed,  gently rinse your mouth with warm salt water and keep the area clean. Avoid chewing on that side and temporarily avoid very hot, cold or sweet foods. As the tooth already has a cavity , it is advisable to have it examined by a dentist soon,  even if pain is mild.

Hello. I can understand your concern. You should quickly visit the dentist for further diagnosis and treatment because your tooth is already carious. The caries will invade deeper, the cavity will get bigger, and there is a chance of infection in future. So it is better to get it treated before it gets worse.