HELP! Weird bump down there?! Im scared

I have a pea sized cyst sort of thing on my vaginas lip... It does not hurt and it feels firm and I’m starting to get worried. Certainly not a zit to be popped, it’s been there for about a week..

If it helps, I should get my period in a few days and I occasionally shave down there...

What could it be?😭

I’ll be seeing my doctor but can someone take a guess? Throw a reassurance in maybe? I’m so so afraid