This is a longitudinal, observational study with the goal of understanding vaginal microbiome changes both within a single day and across a menstrual cycle. The study will be composed of at least 10 women that have regular menstrual cycles and are 18 years of age or older. This study is direct to participant and will NOT utilize clinical sites.

Eligible women will be recruited into the study. They will be consented and asked to complete a health questionnaire. On six separate days during two menstrual cycles, they will be asked to collect vaginal swab samples (total of 12). For each sample collection, they will answer the sample collection questionnaire. Samples will be returned to Viome labs for analysis.

Inclusion Criteria:

• Biological sex is female
• Willing to collect own vaginal samples
• Willing to answer health questions
• Experience menstrual cycles regularly (a monthly cycle)

Exclusion Criteria:

• Pregnant
• Antibiotic use in the past 3 months

At least 10 women with regular menstrual cycles age 18 or older that meet the inclusion criteria.