Hello, I Am 20 Years Old, & Recently I've Been

Hello, I am 20 years old, & recently I've been itching down there and today while I was in the showering I felt like it burned. When I got out of the shower I realized there are a bunch of little red/white dots close to my anus... What can I do to treat it? There is no way it's an STD. I know this for a fact.