Mole referal to dermatology

Hi there

I'm on here just a bit concerned, a mole that is a bit unusual with pigmentation,  shape etc on my back I got checked at the GP, one nurse didn't refer me but 2 weeks later a different nurse has....I'm really nervous and dint know what to think?  It's not Beeding or itchy buy part slightly raised aswell....I've not checked it as much as I should have because it's on my back ..