Hello. Recently I Have Gained A Sort Of Bump Between

Hello. Recently I have gained a sort of bump between my vaginal area and my anus. It looks similar to a bug bite, but it is not itchy. To be honest it doesn't really hurt now. I gained it a couple days ago while menstruating, and the only time it is irritated is when o walk. I have had this happen before, though it went away. I was jus wondering what it could possibly be, and was wondering if I should look into it.