After reading your history it appears that you might have developed allergic dermatitis
over the area. I advise you to not pinch or pop the area. You can apply an antibiotic cream such as gentamycin cream. Antibiotic tablets
are must such as ciprofloxacin
under medical advise. If itching is present then can take benadryl accordingly. You can take pain killer like Ibuprofen or paracetamol or diclofenac according to the pain severity. Consult your operating surgeon to look for the exact situation and treatment of the problem.