Black lump.. What is it?

So I don’t want to post a picture and freak out yet.. i have searched most of aglow for a similar situation but haven’t found one yet...

I have a black lump about the size of a small zit. It is near my clit and it is hard and round. It isn’t growing and I have had it for a while, but just recently it started to hurt when touched.

It isn’t a zit or a blackhead. I made a single attempt to see if it was and it isn’t.

Has anybody else had this before?

I’m 20 and sexually active. Thank you!