I've had this mole next to my ear for as long as I can remember. It has always been very very small and pretty much the same colour as my skin. However a few days ago I noticed it was quite painful to the touch, it has atleast doubled in size, it has gotten a lot darker and bleeds every now and then. 

I'm naturally quite moley and have had a few checked in the past that were okay. Could anyone give me any advice on what to do, I don't want to waste peopes time if it's nothing