Recently I had discovered a tiny dark mark on my back and then I scratched it. After scratching it, it sort of became slightly bigger and now there's some pain when I press it or aggravate it. I think the tiny dark mark used to be a scratch cos' I never had a mole there before. Anyway right now, the mark is a little raised and there is pain therefore the surrounding areas are red.
Can cancerous moles appear out of nowhere? Or am I worrying too much about a scratch? I'm not even sure if it's a mole or something else.
I don't spend a lot of time under the sun although it has happened before.
Help?