I have a mole that has 3 different colours through it, it's smaller than the 6mm's I keep reading about for getting checked. It's on my back so I've never noticed it before, I'm not sure if it's because it hasn't been there, or because my back isn't something I see often. It stood out because one of the colours is very black. It's not at all raised. Should I be going to my GP, or am I wasting an appointment? Has anyone had a mole with several colours that have turned out to be fine? Thank you