Girls, why I have plentiful ingrown hair bumps when I stopped shaving down there?

It's so bad like right now I have 3 beside my lower right lip and 2 close to my pantyline and 1 on my left lip, but I stopped shaving like a year ago cause moms said I was too young in the first place and I am a virgin
Girls, why I have plentiful ingrown hair bumps when I stopped shaving down there?
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