Weird bump

So this morning I rolled over and my vagina hurt whenever I closed my legs. I looked down there and couldn't see anything, but when I touch a part of my labia minora it feels kind of like a bump and hurts. When I walk, sit with good posture, or cross my legs, pain shoots through me. I have no idea what it is but it hurts quite a bit. I have never had sex, so I know it isn't an STD. Everything I have read said to go to the doctor, but I am 15 and go to the pediatrician. Please help.