Stomach and Abdomen Pain, and Vaginal Infection.

I'm 21 years old and think something is wrong. For the past 2 weeks, my stomach and abdomen have been hurting. Only twice has it hurt so much that it kept me up all night. But whenever I eat something, it feels like I want to throw it back up. Also, I have a Vaginal infection, and just now noticed it. I'm not for sure how long it's been since I did, cause I never really paid attention to it. I thought that it was a yeast infection, because of the white substance that comes out. I also took yeast infection meds from CVS, and worked for a little bit, but them came back. I haven't had sex in 2 years, so I know I'm not pregnant. I also read that it could be Chlamydia, a cureable STD, but since I haven't has sex in 2 years, could I have had it since then? Also, brown small spots have popped up on the outside of my vigina. I looked that up as well and it was talking about skin cancer, which I pray it isn't. My Vigina has also been iching and when I urinate it burns a little. Just want some idea's on what it could be. I alsready know I should see a doctor, but don't have medical care, and no money. So before going, I want to know if someone has a list of things on what my symptom might be.
Symptoms:
Stomach and Abdomen Pain
Vigina
Iching
Burns when urinating
White discharge
Brown Spots