Hi, I'm 20 And Just Noticed A Bump On The

Hi, I'm 20 and just noticed a bump on the roof of my mouth. I was at work when my throat started to scratch after I ate a burrito and later on that night became like a flu kind of sick. I thought maybe I was allergic to something in the burrito. My sickness only lasted one day. But my throat still hurts. Hurts to swallow and there's a bump on the roof of my throat that hurts when I touch it. There's no redness or anything to it. I can only feel it with my finger. What is this??