Oh and since you have the cramping and back pain, you need to see your doctor soon. This could have gone into pelvic inflammatory disease.
Aj
Its not HIV, but you need to think about what you are doing that might be causing the BV.
Are you using scented soaps or detergents? Baby or feminine wipes? Wearing panties that aren't 100% cotton? Are you on birth control pills? All these can cause a disruption in the very delicate balance of good and bad bacteria in the vagina, which can lead to bv.
Good luck - BV can be a pain to get rid of.
Aj
Dont sounds like STD but hey we aint Doctors here.. since u are feeling uneasy i suggest to seek medical help and also u better tell the doc that u hv unprotected sex (is it even legal in wherever u are to hv sex at 17??)
whatever it is, pls use protection... STD in HIV sees no race, gender, age as a matter for tranmission. Protect yourself in futures if you have any doubts with the partner u are engaging sex with. Most STD are curable or manageable.. but HIV is a slow killer.