I have a huge pimple on my upper left lip and its swollen and sore. What should I do to reducd the swelling?

May not be pimple. Be evaluated to clarify the diagnosis. Pimples on the lip are not as common as other issues. The" pimple" is more likely due to a herpes virus/ cold sore rather than acne. There are great prescription medications that can shorten the duration of the problem. Over the counter may help a little. See the link for cold sores http://www.webmd.com/a-to-z-guides/understanding-cold-sores-treatmen.