I believe i may have bv again. is there a way to find out for sure before going back to the dr again? the test is just so expensive

Bacterial vaginosis: If your symptoms are typical (discharge, odor) and you haven't been at risk for a new STD, your doctor may be willing to discuss by phone and prescribe another round of treatment without needing to be seen in person. But I don't understand what "so expensive" test there is for BV. It's usually diagnosed quickly and easily; the main cost usually is the office visit itself. Good luck!