Hello and Welcome to HealthcareMagic.
Seems to me a case of bacterial infection/cellulitis. The area is red, swollen, more so just around the navel.
Though, I would like to gather some more information from you in order to be able to help you better.
--Since how many days has it been there? Is it spreading?Did it start from the navel?
--Do you have fever?
--Did you use any antiseptic Or anything else,to cleanse this area?
I would advice that you get a prescription for an oral Antibiotic (penicillin group e.g Amoxycillin
in combination with clavulanic acid
, 625 mg, thrice daily for a week).
An OTC ant bacterial e.g Ibuprofen
can be taken once or twice daily for pain and discomfort.
I hope this answers your query