Tiny bumps?

This is going to get a little graphic because I can't find any info on the Internet, so I apologize in advance.
Okay, so when I pull my labia majora open and lightly pinch the skin inside, it feels bumpy. Not large bumps, but tiny, almost like the size of a grain of salt. They don't hurt, they don't itch, and they normally don't bother me, it's just that I randomly noticed them one day and got really concerned about what they could be. Does anyone else have these? Does anyone know what they are? I'm not even looking to get rid of them, I just want to know what they are to have peace of mind. Any help is appreciated!