that is a simple infected pimple (do not press it and squeeze it - it will spread and infect the near follicles and it may be a furuncle) , if you live in europe try to put some 'baneocin' ointment , ask your parents to get it from the farmacy , you dont need to go to doctor for a infected pimple . (only if you are feeling bad and fever , you must go to the doctor)
Are you sexually active?
Bumps can be many things like pimples and ingrown hairs, and because they can be so many things I can't tell you what it is. See a Dr if concerned.