GO to any pharmacy and get any topical medicine which contains a tritinoic acid and a topical antibiotic (ex : erythromycine ) those things should be easy to get around you and use them once before bed and it should be better in time.
Put ice on it for a couple of minutes to help shrink it, this will also help with any pain that sometimes comes with pimples. I do this a couple times through out the day. Before bed Use clearasil gel. Leave it on over night. Wash off in the morning. You can also use noxzema at night. Put some on it right before bed and sleep with it on. This also helps with dry skin because a lot of acne products cause dryness or flaky skin.