Thanks for the query.
You might have developed cellulitis
It is deep bacterial infection.
It usually affects the sites of incision as bacteria gets an easy entry.
Treatment is with antibiotics.
Probably injectible antibiotics will be required for you.
Please meet a dermatologist
for exact diagnosis.
Let me know if you have any other doubt.
you can ask a direct question to me on this forum, following the below link.
Wishing you a good health.