Cold sore or infected cut?

1st off l've never had a cold sore ever in my entire life. Two days ago my mouth look like the 1st picture thinking it was just a cut. Then the redness went away completely yesterday then all of a sudden look at my camera today (2nd photo) and there's little bumps and lots of redness. No pain. I put some cold sore medicine on it just in case but it wasn't itchy no tingling no pain. Nothing. Until now it's a bit itchy after putting the cream on. Can cold sores just pop up with no warning. And now to get it gone faster if it is.
Cold sore or infected cut?
Cold sore or infected cut?
Cold sore or infected cut?
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