Your symptoms sound like chlamydia, and/or gonorrhea. And a syphilis lesion or herpes. I'll keep my fingers crossed that you are gential herpes negative. You last concern about other's catching it from you: You cannot pass STDs to someone in any of the items/ways you listed. Do NOT have sex with anyone until you know your full STD status and are treated. Herpes blisters go away, they can come back (an outbreak).
Though you've got test results waiting, I hope you have been treated already. Hang in there.
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