It appears there is a cystic swelling. Might be a consequence of your infection with incomplete drainage leading to abscess formation.
It's good if you take the medication advised by an earlier physician if you are not allergic to penicillin based meds.
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Next Steps
-Tab. Augmentin duo 625 twice daily for 7 days with
-Tab. Disperzyme in a100 ml of water twice a day x 5 days.
-Cap Becelac twice daily x 7 as loose stools may be a side effect of Augmentin.
Avoid- paracetamol as it might suppress a fever and pain but little else.
Health Tips
# Chances are that it may also rupture spontaneously. in which case:
*Keep the area well cleaned- toilette with antiseptic
*dust it with betadine powder in that case
*keep covered with a light dressing, till it heals.
*avoid wetting area while bathing etc.