19y/o irregular periods every two weeks sense november, got treated for bv twice w/ metrogel, still irregular,have been checked want another opinion?

You may need to: check again for a different vaginal infection. If there are no other symptoms, such as vaginal itching, odor, etc. then you may be starting irregular spotting/ periods with your hormone cycle. Be patient as it may take another cycle to normalize. As far as BV, there is not a lot you can do other than keep the area reasonably clean but not "too clean" i.e. not too much douching or chemicals.