Hello!Thank you for posting here. Removal of the tooth is the only solution.May be you can go to the dental school or government hospitals nearby for a low budget treatment.You did not mention where you stay.Further postponement of the treatment will only spread the infection and worsen it. Pain can also worsen and radiate to the jaw,neck and head. Gargle with warm saline thrice daily.Do not overuse antibiotics as this will cause stomach upset. Hope this helps.