Hi, I've Noticed A Few Bumps On My Genital Area.

Hi, I've noticed a few bumps on my genital area. About a week ago, I noticed the first, but it has since reduced and is almost gone. Today I noticed 3 more. They are spread out, not clustered, and look almost like pimples, like they could probably be popped. I am sexually active so I'm a bit worried that they are some sort of STD.