Lip Ulcer Picture What Kind Of Bump Is This, On My Gum?

What kind of bump is this, on my gum? - lip ulcer picture

Today, I noticed a sore spot on the gums. I looked in the mirror, and above the top row, a small bump on my gum. I have seen on the upper lip lift, because this is not right on top of a tooth. What is it? It looks like the pictures I saw of ulcers, so it is safe. It's just a little red, and the type of pain.