vaginal lumps that i noticed recently, what are they and will they go away?

after feeling some stinging pain after sex one day, i checked for any bleeding or swelling and these are pictures a day later.

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i have no more pain but these tentacle like lumps worry me. will they go away? i am mid twenties, never been pregnant. recently screened for a handful of STIs and all came back negative. i have had the same partner for about 3 years now.

Looks very normal to me.