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Thanks for posting your query on HealthcareMagic.
BV can cause vaginal irritation
, odor and discharge, but it does not cause pain with urination. The antibiotic you took would help with gardnerella and BV but not with the urinary infection (if you have one). So I don't see any reason for you to take the antibiotic again. You can try to drink lots of fluid and cranberry juice and see if you can clear the urine infection on your own.
If the pain persists, or gets worse, or you develop fever
, back pain
or other severe symptoms, you should call your doctor and start an antibiotic for a UTI. However most of the time it will clear on its own.
I hope this was helpful, please let me know if you have any more questions.