Hello
I really appreciate your concern
Looking at your description this could be suggestive of STI, other infection or an allergic reaction
I would like further information to help you better
Since how long you have this problem
Any exposure to unprotected sex?
Your age and Relevant medical history like
diabetes blood pressure or any other metabolic disorder
Have you seen any doctor, if yes than upload me the medical documents and lab investigations
Please write back to me with these details so that I will be able to advise you more precisely
In my opinion you should keep it clean and apply antiseptic ointment
If it gets worsen or doesn't improve than you should consult your doctor for physical check up and detailed evaluation
Maintain good hygiene
use condoms during sex until it heals completely
Hope this answers your question
if you have any more doubts please feel free to write back to me, I will be happy to help you
Best wishes