Small bumps on vulva after sex

I had sex a few hours after my sugaring appointment. My partner had a bit of stubble and I was on top, so I'm thinking this is just irritation. But my over-thinking mind won't let me sleep. I don't think it's an std since I'm in a long term relationship. Opinions?

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This looks like skin irritation, maybe put some sudacream on it and it should be fine