Is this what I think it is!?

Ive NEVER had an std before, but this randomly appeared one morning and i am terrified i have a new boyfriend, and we had sex multiple times a few days before this appeared. its the only spot i have, it was itchy at first, but its not now. theres a slight burning sensation, it doesnt burn or hurt extra to pee or anything. its in the crevice between my vaginal lip and the hood. there was no bump or anything before, im scared of stds and am always checking myself. im TERRIFIED. please help :frowning: !
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Are u able to get it swabbed?