*sigh* I hate coldsores. I get them...um...ocassionaly (and DON'T ASK HOW - trust me, you don't want my answer and I WILL give it).
Put the medication on them, try to not bite the lip, rub the lips together frequently, run the tongue over them, etc. Then, when they're gone, be happy. If they continue more than a few days, or get numerous (more than 2-5), go see a doctor. It could be a viral outbreak or oral STD (if you've recently had intimate oral contact). Normally, not a big deal, but they can be a pain in the rear and unsightful if they're not on the inside of the mouth.