All right, I know there are some similar questions here, but there's something a little... off.

About a month and a half ago I developed, what appeared to be, a pimple very far down on the outer vaginal lip. It didn't look odd, just a bit red, and it popped and bled twice. Since then, it's stopped doing anything, and is no longer painful. However, there's still a bump (albeit a smaller one) where it was. Is this unusual? Should I be concerned? Is it possible that it's developed a scar, or should I worry?