Thanks for the query,
You might have developed a bacterial infection.
Suture line infection is a common problem.
Apply a topical antibiotic
cream like mupirocine.
Also take an oral antibiotic like a third generation cephalosporin
This will give you relief.
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.