Without use of antibiotic a boil in armpit would have chances of reappearing. You need to do a complete course of Cefixime
200 twice daily or augmentin
625 mg twice daily for 5 days (you need to find out which brands are available there for these salts). Take brufen
tablets twice daily for pain and keep doing hot compress 4-6 times a day.
Need to clean the skin with antibacterial soaps available there daily.