Welcome and thanks for posting your query to HCM.
You have not mentioned in your query since how long you have the problem, exact area of involvement, time period since the unprotected intercourse
was done, exact description of the rash
kind of thing ( is it a ulcer or a rash only or a raised structure), the kind of discharge ( is it watery or red or yellowish or a mixed kind of discharge is present).
So, it is better to consult either a dermatologist
with expertize in sexually transmitted disease
or you can send the detailed query to our forum where we can help you regrading the nearest possibility.
Hope it helps.
with good health wishes,
Dr Sanjay K Kanodia
MD ( Dermatology and STD