If it is visible can you please post a picture here for me to have a look at.
The most likely cause of this tiny lump is a cyst under the skin that is causing your lump.
This does not seem likely to be anything serious or anything to worry about.
Does not sound like any STD.
The other possibility is that it could be a tiny lipoma under the skin which may not be particularly round like you mention and this can last for years and years without causing any symptoms.
Let me know if you have more questions.Please do submit a rating when you are done.Kindest regards
Yes the only way to have the lipoma cured would be to have this removed by a very small surgical procedure, which is what I would recommend doing actually.
Can you please rate me before we proceed.
You can continue asking questions even after you rate me.
It is a simple surgery.
Will not cause any complications.