Is this a mole or skin cancer? (photo)

I've had a mole near my belly button since I was a little kid, possibly an infant but only after I had started to do some research on plantar wart I got I decided to look into it and it has me concerned. Is this a normal mole or something else? It is 8mm long, and 4mm wise with a black dot in the center with brown around it. The black dot is 3mm long, 3mm wide.