COLD SORE!!!

So I just woke up with a cold soar and right now its relatively small. I get really bad cold sores that usually send me to the doctor. My entire lip swells up, its painful, i cant open my mouth to eat or brush my teeth, i can only drink liquids threw a small straw and its lasts for weeks. I have two more days of school and I dont want to go with a giant cold sore. Right now its the size of a pea and I can deal with that. I've put medicine on it but its already started to run its course so i cant make it go away. But If anyone has tips on how to stop it from getting bigger then it is and make it heal faster, I would greatly apreciate it!!!