HELP my cheeks are always red!!!

Hey guys so I have pink/red cheeks all the time... I am a teenager and I have NO IDEA how to get rid of it. I don't know what it is... I used to live abroad when I was younger so maybe it could be sun damage but my skin is also sensitive. Most toners make it worse because of my sensitivity and then I look like a tomato. Any suggestions of what to do or what it is please xx