My lips are tingling and feels slight pain somrtimes in lips which comes again and again and reduces...its happening since few weeks maybe almost a month and now its come again i am feeling tingling in corner of my lips and slight pain again and i am scared if its a cold sore or somrthing else? Also i have small milia around my lips which are not painful but were painful when it initially came...also i started over moisturizing my lips after i was scared since a month..could it be side effects or heat? Something more?