Small bumps on penis but no symptoms

About a month ago, a medium sized red bump appeared at the base of penis that i thought was a pimple because i could occasionally pop it. But now there are other smaller bumps appearing on the shaft of my penis as well as my inner thighs. I have been having unprotected sex recently so stds are a concern. I thought it was syphillis at first but i got tested for that specifically and it was negative. If anyone could help me figure out if I should be worried or not that would be great.

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did you ever figure out what it was?

did you get tested? I have the same, can you please answer