Warts or cyst

I recently developed this bump on my penis and its been stressing me out. Ive googled genital warts and it doesnt look like any of the pics ive seen, its also only one bump. Ive recently got back with my long distance girlfriend back in december and have been only having sex with her. We dont use condoms, and she hasnt come to me with any bumps on her side. Im going to my local planned parenthood to get checked on thursday. im so stressed please help.

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