Help. Strange pimples around vulva and on clitoral hood

I have had flesh coloured pimples show up all around my vulva , anus and above clitoral hood. It has been itchy and sore but some days its fine and than flares up again. I had sex in February but the pimples were there beforehand and there was no rash or soreness. There is nothing inside my vagina, its all just on the outside.

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