I am 17 years old... and I have a bump on the left side outside my vaginal walls and it is fairly small which is red the color of the skin down there but I'm not sure what it is and why its there.. its not painful or sensitive and it doesn't hurt down there.. I was thinking maybe it could be a cyst or something? I'm not sure.. I don't have health insurance I don't think I could visit a doctor.. is this serious?