Last night I had sex and this happened ??

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So last night I had sex and I noticed I was a lil dry at some points. When we got done I noticed swelling on the left side of my vagina but he also had like leaning on my right side focusing more on that side, if that makes sense. The swelling hasn’t gone down and it’s super uncomfortable, what could this mean ? Is it a yeast infection? Because I thought I had one before all of this also