I have had BV for years. My dr told me i did not need to treat it as it wouldnt cause major issues, I dont know if i believe that or not, but from my research, yes, it can reoccur. And can do so many times. Sometimes the first treatment doesnt work, so go back to your doctor if your not sure. :)
another thing i forgot to ask is. does BV go away on its own???
it can but i've been told by my doc that you shouldn't wait to treat it cause it can cause PID which can cause you to not be able to have babies. i would say go back to the doc because i'm in th same boat and they will probably just give you more antibiotics like they did for me just don't have any sex, don't douche, don't wear tight pants, wipe from front to back meaning vag to anus, drink lots of water, eat yogurt with active culturs its supposed to be plain if you can stomache it, watch the amount of sugar you eat that can cause a yeast infection after being treated with anti biotics, if your on a high estrogen level birth control you could talk to your doc about switching to a lower estrogen level pill.