A direct vaginal pH reading will be research staff-obtained before the speculum exam, as well as one hour, and six hours post-treatment (Day 0). At the one hour and six hour post treatment time points, the direct vaginal pH readings will be taken on specimens collected from two different positions in the vagina, in case of incomplete distribution of the IP soon after administration. Both readings will be included as data points. At the six hour timepoint, subjects will be trained on self-collecting vaginal swabs and performing the vaginal pH test. At 12 hours post-treatment, subjects will perform the vaginal pH test themselves using self-obtained swabs, and record their results for clinician review.