Iam having yellow tooth cavity behind my front teeths since long. is there any solution except consulting a dentist?

Not really: Only a dentist can restore the teeth with fillings. No home remedies I am aware of.

No: If you have a cavity, it does not heal by itself. You need to see a dds. You might try praying really hard and then see a mental health person.

No. : You need to see a dentist. You might have some staining or a small cavity so don't hesitate and see a dentist asap.