[DoctorTan]

Agree with everyone here. Worst thing you can do is panic.
Actually, worst thing you can do is to put all sorts of creams and lotions on it before seeing a doctor.

Just because a lesion is in the pubic or genital area does not mean it is an STD.

See a doctor to get diagnosed. There is no need to feel pai seh. Trust me. We deal this these issues everyday.

Whether it is an STD or not, at the end of the day you need to find out what it is and treat it.

Most GPs will be able to handle this but you might want to find one that is a bit more familiar with STD and skin problems.