17.never had sex. But I noticed that it stings a bit when I pee. And it stings when I wipe. And I noticed there's tiny cuts on the lips. Help?

Infection. You probably either have a urinary tract infection or a vaginal yeast/fungal infection. Neither are sexually-transmitted. Recommend see a doctor or going to a clinic to get a urine test since the treatment is different whether it is bacterial or fungal. However, the treatment is short and simple.