Is it or a canker sore?

I have, what I would like to think, a canker sore, but I'm not entirely sure. I've never gotten a coldsore before, but from what i've read they can be dormant for years and then appear. It's hard to tell if it's a coldsore or not because it's right on the cusp, not really in the corner of my mouth, but on the side, and its hard to tell there if it's on the inside or not. I bite my lip on the inside A LOT, which causes a lot of canker sores, and I believe this may be from me biting but i'm not entirely sure and just wishing for some clarification here.