Thank you for your medical query at DoctorSpring.com
I understand your concern.
This is an abscess and it needs to be drained. You can try with oral antibiotics but if the pain worsens or the swelling gets bigger, there is no other option. The antibiotic that works well in such cases is Cefotaxime 200 mg twice daily. Apart from that local application of Mupirocin ointment will also be helpful. I can understand your apprehensions but getting medical help is required in this case.
Hope this was helpful,