I have 2 new moles that I am aware of. One is right next to an old wart that never left my palm (it was treated several times and did die, it just didn't disappear). It's about a centimete diameter and not raised at all, and it is normally coloured. The other mole appeared on my forearm. It is almost a yellowish colour, and it is raised a bit, but not irregular.
I rarely go out in the sun. How could these new moles be forming? Should I be worried?