After reading your history it appears that you might have developed secondary infection over the local area. These areas are very prone for getting secondary infection. I advise you to not pinch or pop the area. You can apply an antibiotic cream such as gentamycin
cream. Antibiotic tablet s are must such as ciprofloxacin
under medical advise. If itching is present then can take benadryl
accordingly. Consult family physician at the earliest for checking the exact cause.