On my period (cd3+) my pants will be soaked but its clear, not blood. my tampon is often not even full with blood. lots of women online say the same?

BV?: You may have bacterial vaginosis (BV), this usually presents with clear, watery discharge with fishy odor. BV is often caused by period in a woman already colonized with the bacteria responsible for this, as the bleeding will change the acidity of the vagina allowing the bacteria to overgrow. See your family doctor or ob/gyn for evaluation and treatment.