Could my skin just be really really sensitive?

it seems like everything I use breaks out my skin! is this because its verry sensitive... or something else? But what? i know that I have extremely sensitive skin but i dont know what to do? And I have always had thiss like crop of whiteheads underneath my bottom lip there not visible unless I pull my lip up but there still anoying they have been there for many year. What are they and how to get rid of them!