lip cancer question help plz?

just so u can get the picture, the upper lip has a M shape and the lower lip is just like a concave curve

imagine having on the lower lip a kinda another level of a lip W shaped its not visible from away but in close it can be seen, theres not ulcers or bleeding or pain i never smoked or drank alcohol but i get exposed to sun light very much, so please help me i need to know if its cancer or something else, and what u suggest i should do